Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
depressor is a noun meaning "any skeletal muscle that draws a body part down". It carries 3 recorded senses.
any skeletal muscle that draws a body part down
any nerve whose activity tends to reduce the activity or tone of the body part it serves
a device used by physician to press a part down or aside
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 depressor come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.