| permissive cell | <cell biology> Cells of a type or species in which a particular virus can complete its replication cycle. (18 Nov 1997) |
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| permissive temperature | <molecular biology> Of a temperature sensitive mutation, a temperature at which the mutated gene product behaves normally and so the cell or organism survives as if wild type. C.f. The restrictive temperature, at which the gene product takes on a mutant phenotype. (18 Nov 1997) |
| permissiveness | The attitude that grants freedom of expression and activity to another individual, but not necessarily with sanction or approval. (12 Dec 1998) |