| back mutation | |
| —n | |
| genetics the reversion of a mutant to the original phenotype | |
| an extraordinary or unusual thing, person, or event; an exceptional example or instance. |
| a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question. |
| Main Entry: | back mutation |
| Part of Speech: | n |
| Definition: | See reverse mutation |