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revertant

[ri-vur-tnt] /rɪˈvɜr tnt/
noun
1.
a gene, organism, or strain that has undergone a back mutation.
adjective
2.
of or pertaining to a gene, organism, or strain that has undergone a back mutation.
Origin
1580-1590
1580-90, for an earlier sense; revert + -ant
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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revertant in Medicine

revertant re·ver·tant (rĭ-vûr'tnt)
adj.
Having reverted to the normal phenotype, usually by a second mutation. n.
A revertant organism, cell, or 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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