Definition of penetrant in English:

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Pronunciation: /ˈpɛnɪtr(ə)nt/


(Of a gene or group of genes) producing characteristic effects in the phenotypes of individuals possessing it.
Example sentences
  • Of the 230 mutants, 55 fell into the first class and we continued the characterization of 36 of these mutants that had highly penetrant mutant phenotypes.
  • In a primary screen, we collected mutant lines in which the test females showed a significantly more penetrant sterile phenotype than did females of the sensitive background alone.
  • Because of the difficulties associated with performing genetics on partially penetrant mutations, this mutant will not be discussed further in this paper.


A coloured or fluorescent liquid used to penetrate cracks, pores, and other surface defects to facilitate their detection.
Example sentences
  • Use latex products, penetrants, or breathable epoxy generic materials designed to reduce the emission of water vapor from the slab.
  • There are basically two types of water repellents: films and penetrants.
  • Unique to such a thick oil are penetrants designed to reach deep within to all points of the chain.

For editors and proofreaders

Line breaks: pene|trant

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