a combining form meaning “that which produces,” used in the formation of compound words: endogen; hydrogen.

< French -gèneGreek -genēs born, produced; akin to Latin genus, kin

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World English Dictionary
suffix forming nouns
1.  producing or that which produces: hydrogen
2.  something produced: carcinogen
[via French -gène, from Greek -genēs born]

Collins English Dictionary - Complete & Unabridged 10th Edition
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Medical Dictionary

-gen or -gene

  1. Producer: androgen.

  2. One that is produced: phosgene.

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