IPA: /ˌæd.əˈnaɪ.tɪs/
KK: /ˈæd.əˌnaɪ.tɪs/
This term refers to the swelling or irritation of a lymph node or gland in the body.
The doctor diagnosed her with adenitis after examining the swollen lymph nodes.
Adenitis is formed from "aden" (from Greek "aden", meaning gland) and "-itis" (from Greek "itis", meaning inflammation). The word refers to the inflammation of a gland.
Think of 'aden' meaning gland and '-itis' indicating inflammation — adenitis is the inflammation of a gland.