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auxotroph

 - 4 dictionary results

aux⋅o⋅troph

  [awk-suh-trof, -trohf]
Use auxotroph in a Sentence
–noun Biology.
a mutant organism, esp. a microorganism, that has a nutritional requirement not shared by the parent organism. Compare prototroph (def. 1).
Origin:
1950–55; back formation from auxotrophic; see auxo-, trophic

Related forms:
aux⋅o⋅troph⋅ic, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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aux·o·troph   (ôk'sə-trŏf, -trōf')   
n.  An organism, such as a strain of bacteria, that has lost the ability to synthesize certain substances required for its growth and metabolism as the result of mutational changes.

[Back-formation from auxotrophic.]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: auxo·troph
Pronunciation: -"trOf, -"träf
Function: noun
: an auxotrophic strain or individual
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

auxotroph aux·o·troph (ôk'sə-trŏf', -trōf')
n.
A mutated microorganism having nutritional requirements that differ from those of unmutated microorganisms from the same strain.

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