Auxotroph definitions

ôk'sə-trŏf, -trōf'
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.
noun
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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.
noun
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Any microorganism that has lost the ability to synthesize an organic compound required for its growth, usually as a result of mutation.
noun
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Origin of auxotroph

Back-formation from auxotrophic