from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A scar on the earth's surface left from the impact of a meteorite.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A pit-like structure created by an impacting meteoroid, asteroid or comet.
astro- + Greek blēma, missile, wound (from ballein, to throw.(American Heritage® Dictionary of the English Language, Fourth Edition)
1963, from astro- + Ancient Greek βλῆμα (blema, "wound from a missile") (Wiktionary)