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| 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. |
| a chattering or flighty, light-headed person. |
| space biology | |
noun | |
| the branch of biology concerned with the effects of outer space on living organisms and the search for extraterrestrial life [syn: exobiology] |