1. (adj)pharyngeal tonsil, adenoid, Luschka's tonsil, third tonsil, tonsilla pharyngealis, tonsilla adenoidea a collection of lymphatic tissue in the throat behind the uvula (on the posterior wall and roof of the nasopharynx) Synonyms: third tonsil, pharyngeal tonsil, adenoid, tonsilla pharyngealis, tonsilla adenoidea
2. (adj)adenoid relating to or resembling lymphatic glands or lymphoid tissue