variants: or adeno-

Definition of aden- 

(Entry 1 of 2)

: gland adenine : adenoid adenovirus


geographical name
\ˈä-dᵊn, ˈā-\

Definition of Aden (Entry 2 of 2)

1 former British protectorate in southern Arabia comprising the entire southern coast of what is now Yemen; became part of People's Democratic Republic of Yemen 1967 area 112,000 square miles (291,200 square kilometers)

2 former British colony in southwestern Arabia comprising Perim Island, the city of Aden, and the surrounding area; became part of People's Democratic Republic of Yemen 1967 area 75 square miles (195 square kilometers)

3 city and port on the Gulf of Aden in southern Yemen; formerly the capital of People's Democratic Republic of Yemen and before that the capital of Aden colony and protectorate population 240,370

History and Etymology for aden-

Combining form

borrowed from New Latin, from Greek aden-, adḗn "gland" (of uncertain origin) + New Latin -o- -o-

Note: Greek adḗn "gland" is traditionally compared with Old Norse økkr "lump, tumor, swelling" (going back to *engʷo-) and Latin inguen "swelling on the groin, groin." However, adḗn, if it reflects Indo-European *n̥gw-ēn, would seem to come from a vowel-initial root *engw-, which violates a generally accepted constraint on vowel-initial roots in Indo-European; on the other hand, if the root were laryngeal-initial, the form *h1ngw- should have yielded *end- in Greek, this allegedly being the regular outcome of the sequence laryngeal/resonant/stop. Hence adḗn may be without Indo-European congeners.

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to make faulty or ineffective

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