WordReference Random House Unabridged Dictionary of American English © 2026
ac•ces•so•ri•us
(ak′sə sôr′ē əs, -sōr′-),USA pronunciation n., pl. -so•ri•i
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(-sôr′ē ī′, -sōr′-).USA pronunciation
- Anatomyany muscle, nerve, gland, etc., that reinforces the action of another.
- Neo-Latin, Medieval Latin: accessory
'accessorius' also found in these entries (note: many are not synonyms or translations):