Definition of "adenoid"

(medicine, relational)

1. Of or relating to lymphatic glands or lymphoid tissue.  examples

2. Of or pertaining to the adenoids.  examples

3. Relating to, affected with, or associated with abnormally enlarged adenoids.  examples

(medicine) an abnormally enlarged mass of lymphatic tissue at the back of the pharynx, often obstructing the nasal and ear passages and hindering speaking and breathing in young children.  examples

(anatomy, usually in the plural) Such a mass when not abnormally enlarged, covered by ciliated epithelium and located in the roof and posterior wall of the nasopharynx at the back of the throat behind the uvula.  examples