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xalostocite(mineralogy) Synonym of rosolite.xanbie(slang, derogatory) Someone who acts like a zombie after consuming large quantities of Xanax or other benzodiazepines, often in combination with alcohol.xanomelineA muscarinic acetylcholine receptor agonist with reasonable selectivity for the M1 and M4 subtypes, possibly useful in treating Alzheimer's disease and schizophrenia.xanthalineSynonym of papaveraldine.xanthamide(chemistry) The amide of xanthic acid.xanthaneArchaic form of xanthan.xanthanolide(biochemistry) Any of several glycosides containing xanthan.xanthate(chemistry) Any salt or ester of xanthic acid.xanthaurineThe aglycone of quercitrin.xantheineAlternative form of xanthein.xanthene(organic chemistry) Any of a group of tricyclic heterocycles (dibenzopyrans) that are the basis for a range of dyes such as fluorescein and eosin.xanthenone(organic chemistry) The compound 9-oxo-xanthene that is the basis of many natural products and insecticidesxanthide(dated, organic chemistry) Any derivative of xanthogen.xanthine(chemistry) Any of a group of alkaloids that include caffeine, theophylline, and theobromine as well as the parent compound, a precursor of uric acid found in many organs of the body.xanthinine(obsolete, organic chemistry) A poorly-characterised material, related to urea and uric acid, that forms yellow salts, and exhibits a blue fluorescence.xanthinoxidaseAlternative form of xanthine oxidase.xanthione(organic chemistry) The thione analog of xanthine, 9H-xanthene-9-thionexanthiosite(mineralogy) A phosphate mineral first discovered in Germany in 1858.xanthitaneA yellow fibrous earthy material that is an aluminium titanite.xanthiteA variety of vesuvianite found in limestone near Amity, New York.xanthochrome(biology) A yellow pigment.xanthoconeSynonym of xanthoconite.xanthoconite(mineralogy) A mineral containing silver, arsenic, and sulphur.xanthocreatinineThe organic compound with chemical formula C₅H₁₀N₄O, related to creatinine.xanthogenamide(chemistry) Synonym of xanthamide.xantholeucophoreA leucophore arising from a xanthophore.xanthommatineAlternative form of xanthommatin.xanthone(organic chemistry) An aromatic ketone, 9-oxo-xanthene, that is used as an insecticide.xanthonoxypropanolamine(organic chemistry) Any propanolamine derived from a xanthon; they show antihypertensive activityxanthophane(biochemistry) The yellow form of chromophane.xanthophileAlternative form of xanthophil.xanthophore(biology) A xanthochrome-containing chromatophore, frequently a lipophore.xanthophyllite(mineralogy, outdated) A synonym of clintonite. The International Mineralogical Association's Commission on New Minerals, Nomenclature and Classification (CNMNC) recommends using clintonite as a replacement in all cases.xanthophyte(biology) Any yellow-green alga (of the class Xanthophyceae).xanthopicrite(organic chemistry, archaic) A bitter crystalline alkaloid extracted from plants of family Xanthoxylaceae.xanthoplanineThe alkaloid (6aS)-1,2,10-trimethoxy-6,6-dimethyl-5,6,6a,7-tetrahydro-4H-dibenzo[de,g]quinolin-6-ium-9-olxanthoproteate(chemistry) Any salt or ester of xanthoproteic acid.xanthopterineAlternative form of xanthopterin.xanthopuccine(organic chemistry) An alkaloid resembling berberine, found in the root of the yellow puccoon (Hydrastis canadensis).xanthoseA complex formed between xanthine and ribose.xanthosiderite(mineralogy) Synonym of limonite.xanthosine(organic chemistry) A nucleoside derived from xanthine and ribose.xanthosomeAny arum of the genus Xanthosoma.xanthoxenite(mineralogy) A dull brown or yellow triclinic mineral.xanthoxylene(archaic, chemistry) A terpene extracted from the seeds of the Japanese prickly ash (Zanthoxylum pipertium).xanthoxylineAlternative form of xanthoxylin.xanthurenate(organic chemistry) Any salt or ester of xanthurenic acid.xantifibrate(pharmacology) A particular antilipidemic drug.xantophoreMisspelling of xanthophore.xarqueArchaic form of jerky.xe(nonstandard) they (singular); gender-neutral third-person singular subject pronoun, coordinate with gendered pronouns he and she.xebecque(nautical) Alternative form of xebec.xebeque(nautical) Alternative form of xebec.xenagogue(obsolete, rare) One who guides strangers; a guide or tour guide.xenate(inorganic chemistry) The oxyanion of xenon HXeO₄⁻.xenematide(organic chemistry) Any of a group of alkaloids present in Xenorhabdus nematophilaxenide(inorganic chemistry) A binary compound of xenonxenipentonea particular nonsteroidal anti-inflammatory drug.xenoarchitecture(science fiction, rare) Extraterrestrial architecture.xenocideThe killing of a stranger or foreigner.xenoculture(microbiology) A foreign culture.xenodontine(zoology) Belonging to a group of colubrid snakes with unusual teeth.xenofobe(non-native speakers' English) Misspelling of xenophobe.xenofree(biology) Without the use of material taken from other organisms.xenohepatocyteA hepatocyte from a xenoliverxenohormone(biochemistry) Any of a group of natural and artificial compounds showing hormone-like properties.xenoimmuneimmune to a xenoinfectionxenoimmunize(immunology) To immunize via xenoimmunizationxenolineA form of xenograft.xenolite(geology) Xenolith.xenologue(genetics) A type of ortholog where the homologous sequences are found in different species because of horizontal gene transfer.xenomedicine(science fiction, rare) The study and practice of medicine involving alien species.xenonate(inorganic chemistry) The oxyanion of xenon XeO₄²⁻.xenonideA binary compound of xenon.xenoparasiteAn ectoparasite that becomes pathogenic only when the host is weakened or injured.xenoperfuseTo undergo xenoperfusionxenophileA person who has a love of foreign people and culture.xenophobeOne who hates or fears strangers or foreigners.xenophone(phonetics) A sound in speech that is not native to the language being spoken; a sound from a foreign language.xenophoreA siderophore used by an organism other than that which produced it.xenophyophoreA giant unicellular organism found in deep parts of the ocean.xenophyte(biology) Any plant that was introduced from another geographic location.xenopodineAny frog of the subfamily Xenopodinae.xenopolymerase(biochemistry) A DNA polymerase that originated in a different organism.xenopositiveThat have tested positive for the presence of xenoparasitesxenoreactive(immunology) That generates a reaction to material from another speciesxenoscience(science fiction, rare) The science of extraterrestrial life.xenosiderophoreA siderophore used by an organism other than the one that produces it.xenosome(zoology) A endosymbiotic bacterium of some marine protozoans.xenosphereA spheroid culture from a xenograft.xenosurveillance(biology) Examination of samples of one species in order to detect the activity of others (typically pathogens).xenotetrapeptideA tetrapeptide from a different species.xenotime(mineralogy) A yellow-brown mineral, yttrium phosphate (YPO₄)xenotineDated form of xenotime.xenotite(mineralogy) A mineral that is a source of rare earth metals.xenotolerance(immunology) Tolerance to an antigen from another species.xenotransfuse(transitive, rare) To subject to xenotransfusion.xenotransplantableCapable of being xenotransplanted.xenotypeAny of two or more variations of the same material from two or more different species.xenovenine(organic chemistry) A pyrrolizidine alkaloid found in the venom of certain ants.xenthioratea particular antilipidemic drug.xenurineAny armadillo of the former genus Xenurus (now Cabassous).xenylamine(organic chemistry) A monoamine isomeric with diphenylamine, obtained as a by-product of aniline manufacture.xenysalate(pharmacology) A particular antiseborrheic compound.xerafineAlternative form of xeraphim.xeriphyte(horticulture) Alternative form of xerophyte.xeriscapeA kind of landscape design for arid regions, minimising the need for irrigation.xeriscence(biology) Serotiny as a result of desiccation.xerocline(ecology) A warm, dry slope.xerocole(biology) An animal that is adapted to a very dry ecosystem (typically a desert).xerohalophyteA halophyte that thrives in very dry conditions.xeromesophyte(biology) A mesophyte adapted to thrive in a very dry environment.xeronate(chemistry, dated) Any salt of xeronic acid.xerophageA person or animal that practices xerophagy.xerophileAny xerophilic organism.xerophobeAny xerophobic organism.xerophyteA desert plantxerosere(ecology) The succession of ecological communities which originated in an extremely dry habitat such as a desert or sand dunes.xerosphereA region with extremely arid conditions; a desert environment.xerotolerance(biology) Ability to thrive in a dry environment.xeroxablephotocopiablexeroxloreSynonym of photocopylore (“a kind of folklore comprising humorous material and urban legends that are reproduced on xerox machines (photocopiers)”).xestoquinone(organic chemistry) A biologically active quinone present in sponges of the genus Xestospongia.xestospongineAlternative form of xestospongin.xfadeAbbreviation of crossfade.xiangjiangite(mineralogy) A yellow mineral composed of aluminium, hydrogen, iron, oxygen, phosphorus, sulphur, and uranium.xifengite(mineralogy) A grey metallic hexagonal mineral.xilazineMisspelling of xylazine.xilingolite(mineralogy) A grey mineral with metallic lustre, having the chemical formula Pb₃Bi₂S₆.ximengite(mineralogy) A trigonal mineral with chemical formula BiPO₄.xingzhongite(mineralogy) An opaque metallic mineral composed of copper, iridium, iron, lead, platinum, rhodium, and sulphur.xinidamine(chemistry) A particular indazole-carboxylic acid.xinomilinea particular antilipidemic drug.xipamideA sulfonamide diuretic drug used to treat oedema and hypertension.xiphonite(mineralogy, obsolete) A scoriaceous amphibole with yellow crystals.xiphophorine(zoology) Pertaining to fish of the genus XiphophorusxiphosureOne of the Xiphosura, such as a horseshoe crab.xitieshanite(mineralogy) A conchoidal green or yellow mineral with the chemical formula Fe³⁺(SO₄)(OH)·7H₂O.xocomecatlite(mineralogy) A telluride mineral found in cracks in altered rhyolite.xoconostleA prickly pear cactus of species Opuntia matudae, native to Central Mexico.xonaltite(mineralogy, rare) A hydrous silicate of calcium, occurring in massive form of a white or bluish‐gray colour.xonotlite(mineralogy) A mineral with the chemical formula Ca₆Si₆O₁₇(OH)₂, found in various colours.xtreme(informal, nonstandard) Alternative form of extreme.xvalue(programming) A value representing an object near the end of its lifetime whose resources can be reused, typically by moving them.xylacineSynonym of xylazine.xylaloe(obsolete, very rare) Synonym of agalloch (“aromatic, resinous wood”).xylamide(organic chemistry) An acid amide derivative of xylic acid, obtained as a white crystalline substance.xylanase(biochemistry) Any of various enzymes that catalyze the hydrolysis of xylan.xylanesterase(biochemistry) An esterase that catalyses the hydrolysis of xylansxylanohydrolase(biochemistry) Any enzyme that catalyzes the hydrolysis of xylanxylarateA salt or ester of xylaric acid.xylate(organic chemistry, dated) Any salt or ester of xylic acid.xylazine(pharmacology) A potent α₂-adrenergic agonist used for sedation, anesthesia, and analgesia in large nonhuman mammals, and as an adulterant in street drugs.xylazole(organic chemistry) An analogue of xylazine, N-(2,6-dimethylphenyl)-2-thiazolaminexylemlikeResembling or characteristic of a xylem.xylene(chemistry) Any of a group of three isomeric aromatic hydrocarbons, found in coal and wood tar.xylidideA pharmacologically inactive glycine derived from lidocaine.xylidine(organic chemistry) Any of six isomeric aromatic amines (CH₃)₂C₆H₃NH₂ derived from the xylenesxylite(organic chemistry) A liquid hydrocarbon found in crude wood spirits.xylitone(chemistry) A yellow oil that is a side product of making phorone.xylobiose(biochemistry) A disaccharide consisting of two xylose residues.xylobiosideA glycoside of xylobiose.xylochlore(mineralogy) An altered form of apophyllite.xylochrome(archaic) A kind of dye derived from the tannin in wood.xylocopineIn the subfamily Xylocopinae of carpenter bees.xylofuranose(biochemistry) The furanose form of a xylose.xylofuranoside(organic chemistry) Any glycoside derived from xylofuranose.xylogalacturonase(biochemistry) Any enzyme that catalyses the hydrolysis of a xylogalacturonan.xyloglucanase(biochemistry) Any enzyme that breaks down xyloglucans.xyloglucosideA glucoside of xylose.xyloheptaose(biochemistry) A heptasaccharide consisting of seven xylose residues.xylohexaose(biochemistry) A hexasaccharide consisting of six xylose residues.xylohexosideA hexoside of xylose.xylohydroquinone(organic chemistry) Any dimethyl derivative of hydroquinone (named as a derivative of xylene).xyloidineAlternative form of xyloidin.xyloidone(organic chemistry) A particular naphthoquinone related to lapachol.xyloketose(organic chemistry) The ketose form of xylose.xyloliteA compressed wood product used for flooring.xylometazolineA drug used as a topical nasal decongestant that works by constricting the blood vessels in the nose.xylomethazolineAlternative form of xylometazoline.xylonate(organic chemistry) Any salt or ester of xylonic acid.xylonite(obsolete) Celluloid.xylonolactoneAny lactone derived from a xylonic acid.xylooligosaccharideAn oligomer of xylose.xylopentaose(biochemistry) A pentasaccharide consisting of five xylose residues.xylopentoseAlternative form of xylopentaose.xylophage(biology) Any living organism that feeds on wood.xylophene(organic chemistry) pentachlorophenol (when used to preserve wood from boring insects).xylophoneTo play a xylophone or to play something else as though it was a xylophone.xylophonelikeResembling or characteristic of a xylophone.xylophyte(botany) Any woody plant.xylopine(organic chemistry) An antimicrobial benzylisoquinoline alkaloid.xylopinine(organic chemistry) A protoberberine alkaloid.xylopolysaccharide(biochemistry) Any polysaccharide based on xylose monomers.xylopyranose(biochemistry) The pyranose form of xylose.xylopyranoside(organic chemistry) Any glycoside derived from xylopyranose.xyloquinone(organic chemistry) Any of a group of quinone compounds obtained by the oxidation of xylidines.xyloretinite(archaic) A fossil resin derived through the action of alcohol on fossil pinewood.xylorutinoside(biochemistry) Any rutinoside of xylose.xylosaccharide(biochemistry) Any polysaccharide derived from xylose.xylose(biochemistry) One of the pentoses, C₅H₁₀O₅, a white crystalline sugar, derived from wood.xylosidase(biochemistry) Any enzyme that catalyses the hydrolysis of a xyloside.xyloside(organic chemistry) Any glycoside of xylose.xylosylateTo attach a xylosyl moiety to a molecule.xylosylfructose(biochemistry) A disaccharide composed of xylose and fructose.xylosylfructosideAny glycoside containing xylosylfructose.xylosyltransferase(biochemistry) Any glycosyltransferase that catalyzes the transfer of xylose.xylotetraose(biochemistry) A tetrasaccharide consisting of four xylose residues.xylotetroseAlternative form of xylotetraose.xylothequeA collection of samples of various types of wood.xylotile(mineralogy) An altered form of asbestos.xylotransferase(biochemistry) A transferase that transfers xylose groups.xylotriose(biochemistry) A trisaccharide consisting of three xylose residues.xylotypeAny moth of the genus Xylotype.xylovoreSynonym of xylophage.xyloxeminea drug, 2-[2-(DI-2,6-xylylmethoxy)ethoxy]-N,N-dimethylethylamine.xylozineMisspelling of xylazine.xylulokinase(biochemistry) A transferase enzyme that catalyzes the chemical reaction ATP + D-xylulose ⇌ ADP + D-xylulose 5-phosphate.xylulose(biochemistry) The ketopentose (3R,4S)-1,3,4,5-tetrahydroxypentan-2-one.xylylene(chemistry) Quinomethane.