Coma
Pronunciation
- UK IPA: /ˈkəʊmə/
- US enPR: kÅʹmÉ™, IPA: /ˈkoÊŠmÉ™/
- Homophones: comber (in non-rhotic accents)
Origin 1
From Ancient Greek κῶμα (kÅma, "deep sleep").
Related terms
Origin 2
From Latin coma ("hair of the head"), from Ancient Greek κόμη (komē, "hair").
Noun
coma
(plural comae)- (astronomy) A cloud of dust surrounding the nucleus of a comet.
- (optics) A defect characterized by diffuse, pear-shaped images that should be points.
- (botany) A tuft or bunch, such as the assemblage of branches forming the head of a tree, a cluster of bracts when empty and terminating the inflorescence of a plant, or a tuft of long hairs on certain seeds.