auxotroph

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

noun Biology.

a mutant organism, especially a microorganism, that has a nutritional requirement not shared by the parent organism.Compare prototroph(def 1).

QUIZZES

QUIZ TIME: TEST YOUR MEMORY OF THE MAY 2020 WORDS OF THE DAY

Let the aeolian gusts transport you back to these popular Words of the Day from the month of May. How many do you remember?
Question 1 of 10
Which of the following words means “to travel or journey, especially to walk on foot”?

Origin of auxotroph

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

OTHER WORDS FROM auxotroph

aux·o·troph·ic, adjective

Words nearby auxotroph

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for auxotrophic

auxotroph
/ (ˈɔːksətrəʊf) /

noun

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

Derived forms of auxotroph

auxotrophic, 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

Medical definitions for auxotrophic (1 of 2)

auxotrophic
[ awk-sō-trŏfĭk ]

adj.

Requiring one or more specific substances for growth and metabolism that the parent organism was able to synthesize on its own. Used with respect to organisms, such as strains of bacteria, algae, or fungi, that can no longer synthesize certain growth factors because of mutational changes.

Medical definitions for auxotrophic (2 of 2)

auxotroph
[ ôksə-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.