Dictionary
ac•ces•so•ri•us
Pronunciation: (ak"su-sôr'ē-us, -sōr'-), [key]—
n.,
—pl. -so•ri•iPronunciation: (-sôr'ē-ī", -sōr'-). [key]
Anat.any muscle, nerve, gland, etc., that reinforces the action of another.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.