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auxotroph

American  
[awk-suh-trof, -trohf] / ˈɔk səˌtrɒf, -ˌtroʊf /

noun

Biology.

  1. a mutant organism, especially a microorganism, that has a nutritional requirement not shared by the parent organism.

auxotroph British  
/ ˈɔːksətrəʊf /

noun

  1. a mutant strain of microorganism having nutritional requirements additional to those of the normal organism

"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

Other Word Forms

  • auxotrophic adjective

Etymology

Origin of auxotroph

1950–55; back formation from auxotrophic; auxo-, trophic

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.