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