/ Dictionary / Index A astrobleme: Meaning and Definition of Find definitions for: as•tro•bleme Pronunciation: (as'tru-blēm"), [key] — n. Geol. an erosional scar on the earth's surface, produced by the impact of a cosmic body, as a meteorite or asteroid. Cf. crater (def. 2). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. astrobiology astrochemistry Related Content Daily Word Quiz: languid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language