Aa
Definition, Meaning & Examples
Pronunciation /ˈɑː.ɑː/ · Part of speech noun
Quick meaning: Aa is a noun meaning Initialism of acetic acid.
Meaning
Initialism of acetic acid.
More Meanings
- Initialism of acting age.
- (medicine) Initialism of alveolar-arterial.
- Initialism of aminoacetone.
- Initialism of amino acid.
- Initialism of approximate absolute.
- Initialism of arachidonic acid.
- (volcanology) A form of lava flow associated with Hawaiian-type volcanoes, consisting of basaltic rock, usually dark-colored with a jagged and loose, clinkery surface. Compare pahoehoe.
Example Sentences
We...saw ‘pahoihoi’ or solid lava forming, and also ‘aa’ or clinkers.
Cooling and solidification frequently takes a different course [...] in lava flows, producing the clinker-like ‘aa’ lava.
Both pahoehoe and aa lava flows are common on the upper slopes of Mauna Loa with a preponderance of aa flows found at the lower elevations.
Related Words
Related dictionary entries include crystallin, helly, bb, lava, scoria, clinker.
Related Dictionary Tools
Sources & Attribution
FreeDictionaryAPI.com / Wiktionary · Original source · CC BY-SA 4.0
Dictionary data is provided by FreeDictionaryAPI.com and sourced from Wiktionary under its stated license.