auxotroph


Concise Oxford English Dictionary © 2008 Oxford University Press:
auxotroph /ˈɔːksətrəʊf, -trɒf/
noun Biology a mutant organism that requires a particular additional nutrient which the normal strain does not.
– derivatives
auxotrophic adjective.
– origin 1950s: from L. auxilium ‘help’ + Gk trophos ‘feeder’.
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