Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
arytaenoid is a noun meaning "either of two small cartilages at the back of the larynx to which the vocal folds are attached". It carries one recorded sense.
either of two small cartilages at the back of the larynx to which the vocal folds are attached
Forms marked are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for arytaenoid come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.