anticholinesterase
noun
an·ti·cho·lin·es·ter·ase ˌan-tē-ˌkō-lə-ˈne-stə-ˌrās 
-ˌrāz,
ˌan-tī- : a substance (such as neostigmine) that inhibits a cholinesterase by combination with it
Word History
First Known Use
1938, in the meaning defined above
Medical Definition
anticholinesterase
noun
an·ti·cho·lin·es·ter·ase -ˈnes-tə-ˌrās, -ˌrāz
: any substance (as neostigmine) that inhibits a cholinesterase by combination with it