| given to using long words. |
| (used as a nonsense word by children to express approval or to represent the longest word in English.) |
acetylcholinesterase a·ce·tyl·cho·lin·es·ter·ase (ə-sēt'l-kō'lə-něs'tə-rās', -rāz')
n.
Any of various enzymes in the blood and in certain tissues that catalyze the hydrolysis of acetylcholine.