Webster's Revised Unabridged Dictionary · 1913

Adenoid

Adenoid , noun

1.
(Medicine) Lymphoid tissue in the roof of the nasopharynx; -- often in the pl. — Stedman 25
2.
(Medicine) A swelling produced by overgrowth of adenoid{1} tissue; -- usually in pl. — AS

Adenoid , adjective

1.
(Medicine) Of or relating to a gland.
2.
(Medicine) Pertaining to adenoids{2}. — Merriam Webster Medical Dictionary

Adenoid ({not transcribed}) , adjective

Glandlike; glandular.

Also: Adenoidal