| 1. | Biochemistry. the acetic acid ester of choline, C7H17NO3, released and hydrolyzed during nerve conduction and causing muscle action by transmitting nerve impulses across synapses. |
| 2. | Pharmacology. this substance used in its chloride form in eye surgery. Abbreviation: ACh |
acetylcholine a·ce·tyl·cho·line (ə-sēt'l-kō'lēn')
n.
Abbr. Ach
A white crystalline derivative of choline that is released at the ends of nerve fibers in the somatic and parasympathetic nervous systems and is involved in the transmission of nerve impulses in the body.