adenoid
UK[ˈadɪnɔɪd]US[ˈædəˌnɔɪd]
n
A mass of lymphoid tissue at the back of the nasal cavity, especially when enlarged and obstructing breathing.
adj
Of or relating to the adenoids or to lymphatic or glandular tissue.
Morpheme Breakdown
aden
oid
aden
gland
oid
resembling
Etymology
The word 'adenoid' is a modern medical term constructed directly from classical Greek components. It combines adēn (gland) with the suffix -oeidēs (like, resembling), literally meaning "gland-like". This name was given because the adenoids are composed of lymphoid tissue which has a glandular appearance and function, being part of the immune system. The term entered English in the late 19th century, reflecting the era's practice of using precise Greco-Latin vocabulary for anatomical structures. The logic is transparent: the tissue's form and perceived function (gland-like) directly informed its scientific name.
Analysis
Structure: aden (gland) + oid (resembling)
- aden: From Greek adēn (genitive adenos), meaning "gland". It functions as the core root indicating the subject matter.
- oid: From Greek -oeidēs, meaning "having the form of, resembling". It functions as a suffix that forms adjectives and nouns.
Examples
The child's chronic snoring was caused by enlarged adenoids.
The surgeon performed an adenoidectomy to remove the obstructive tissue.
Adenoid hypertrophy can lead to recurrent ear infections.