[ ahd-n, eyd-n ]
/ ˈɑd n, ˈeɪd n /
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a seaport in and the economic capital of the Republic of Yemen, in the southern part: formerly the center of a British colony.
Colony of Aden, a former British colony on the Gulf of Aden and a member of the former Federation of South Arabia. 75 sq. mi. (194 sq. km).Also called State of A·den.
Protectorate of Aden, former name, until 1962, of the former Protectorate of South Arabia.
Gulf of Aden, an arm of the Arabian Sea between Arabia and the eastern tip of Africa.
Should you take this quiz on “shall” versus “should”? It should prove to be a quick challenge!
Question 1 of 6
Which form is used to state an obligation or duty someone has?

Origin of Aden

First recorded in 1640–60; from Arabic ʿAdin, ʿAdan, perhaps ultimately from Akkadian edin(n)u “plain,” from Sumerian eden “plain, steppe”; see Eden1

Other definitions for Aden (2 of 2)


variant of adeno- before a vowel: adenitis.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022


What does aden- mean?

Aden- is a combining form used like a prefix meaning “gland.” It is often used in medical terms, especially in anatomy.

Aden- comes from the Greek adḗn, meaning “gland.” This Greek root is ultimately the source of adenoids, the enlarged masses of lymphoid tissue in the upper pharynx, often obstructing breathing through the nasal passages.

Aden- is a variant of adeno-, which loses its -o- when combined with words or word elements beginning with vowels. Want to know more? Read our Words That Use adeno-  article.

Examples of aden-

An example of a word you may have encountered that features aden- is adenectomy, “the surgical excision of a gland.” An adenoidectomy, if you’re wondering, is the specific term for the removal of the adenoids.

The first half of the word, aden-, means “gland,” as we now know. The second component, ectomy, may be familiar to you as well. It appears in such words as  appendectomy and tonsillectomy. The form -ectomy means “excision,” or the removal of part of all of an organ. The word adenectomy, then, translates literally to “gland excision.”

What are some words that use the combining form aden-?

What are some other forms that aden– may be commonly confused with?

Break it down!

The combining form -itis denotes “inflammation.” Adenitis, generally speaking, involves the inflammation of what part of the body?

How to use Aden in a sentence

British Dictionary definitions for Aden

/ (ˈeɪdən) /

the main port and commercial capital of Yemen, on the N coast of the Gulf of Aden, an arm of the Indian Ocean at the entrance to the Red Sea: capital of South Yemen until 1990: formerly an important port of call on shipping routes to the East. Pop: 584 000 (2005 est)
a former British colony and protectorate on the S coast of the Arabian Peninsula: became part of South Yemen in 1967, now part of Yemen. Area: 195 sq km (75 sq miles)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for Aden


Variant ofadeno-
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Cultural definitions for Aden

[ (ah-dn, ay-dn) ]

Capital and chief port of Yemen, located on the Gulf of Aden, near the southwest corner of the Arabian Peninsula and the southern entrance of the Red Sea.

notes for Aden

Its strategic location and excellent harbor have made Aden an important trading center of southern Arabia since ancient times, as well as a coveted conquest.
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.