Definition of revertant in English:


Line breaks: re¦vert|ant
Pronunciation: /rɪˈvəːt(ə)nt


  • (Of a cell, organism, or strain) having reverted to the normal type from a mutant or abnormal form: this reverses the defect and creates revertant bacteria that do not require histidine
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    • This process culminates when haploid lac +revertant cells overgrow the original clone of cells with an amplification.
    • The bodywall muscle in these revertant animals is also indistinguishable from wild-type muscle when viewed under polarized light (data not shown).
    • This gives the appearance of directed mutagenesis because only revertant cells survive mutagenesis.


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  • A revertant cell, organism, or strain: vaccine virus revertants
    More example sentences
    • A lower intensity of mutagenesis can explain all observed revertants if each mutagenized cell has multiple copies of the lac operon.
    • The numbers of revertants and viable cells were counted after incubation for 2 days at 37°C.
    • We again found that most cosQ revertants were true revertants.

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