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/ˈsɛsaɪl/ · adjective
(zoology) Permanently attached to a substrate; not free to move about..
a sessile oyster
The pileus is sessile, or sometimes narrowed at the base into a short stem, the caps often numerous and crowded together in an overlapping or imbricate manner.
The sporophyte foot is also characteristic: it is very broad and more or less lenticular or disciform, as broad or broader than the calyptra stalk[…], and is sessile on the calyptra base[…]
Use sessile when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Sessile means (zoology) Permanently attached to a substrate; not free to move about..
Common synonyms include attached, fixed, immobile, immotile.
Possible antonyms include mobile, motile, vagile, ambulatory.
a sessile oyster
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