adenoidal

UK: /ˌædɪˈnɔɪd^əl/ US: (ad′n oid′l)

WordReference Random House Unabridged Dictionary of American English © 2026

ad•e•noi•dal  (ad′n oid′l), adj. 

1. Anatomy of or pertaining to the adenoids;
   adenoid.
2. Anatomy having the adenoids enlarged, esp. to a degree that interferes with normal breathing.
3. being characteristically pinched and nasal in tone quality:
   a high-pitched, adenoidal voice.

• adenoid + -al¹ 1915–20

Collins Concise English Dictionary © HarperCollins Publishers::

adenoidal / ˌædɪˈnɔɪd^əl/ adjective

1. having the nasal tones or impaired breathing of one with enlarged adenoids