/ Dictionary / Index A anticholinesterase: Meaning and Definition of Find definitions for: an•ti•cho•lin•es•ter•ase Pronunciation: (an"tē-kō"lu-nes'tu-rās", -rāz", -kol"u-, an"tī-), [key] — n. Biochem., Pharm. an enzyme or drug that blocks the action of acetylcholinesterase, thereby increasing the stimulating effect of acetylcholine on the muscles. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: anticholinesterase (Thesaurus) anticholinergic Antichrist Related Content Daily Word Quiz: feline Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language