hartshorn definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
- a hart's antler
- Now Rare ammonium carbonate, used in smelling salts; sal volatile: so called because formerly obtained from deers' antlers
hartshorn definition by American Heritage Dictionary
- The antler of a hart, formerly used as a source of ammonia and in smelling salts.
- Ammonium carbonate.