Main Entry:

¹ad·e·noid

Pronunciation:

\ˈa-də-ˌnȯid, ˈad-ˌnȯid\

Function:

noun

Etymology:

Greek adenoeidēs glandular, from adēn

Date:

circa 1890

: either of two abnormally enlarged masses of lymphoid tissue at the back of the pharynx that usually obstruct the nasal and ear passages ; also : such a mass when not abnormally enlarged —usually used in plural