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auxotroph

[awk-suh-trof, -trohf]
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noun Biology.
  1. a mutant organism, especially a microorganism, that has a nutritional requirement not shared by the parent organism.Compare prototroph(def 1).
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Origin of auxotroph

1950–55; back formation from auxotrophic; see auxo-, trophic
Related formsaux·o·troph·ic, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for auxotroph

auxotroph

noun
  1. a mutant strain of microorganism having nutritional requirements additional to those of the normal organism
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Derived Formsauxotrophic, adjective
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

auxotroph in Medicine

auxotroph

(ôksə-trŏf′, -trōf′)
n.
  1. A mutated microorganism having nutritional requirements that differ from those of unmutated microorganisms from the same strain.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.