-ˈkōˌlēn, -ˈkä- noun
( -s )
Etymology: International Scientific Vocabulary acetyl + choline
: a compound (CH 3 ) 3 N(CH 2 CH 2 OOCCH 3 )OH that is released at many autonomic nerve endings, is believed to have a specific function in the transmission of the nerve impulse, and is formed enzymatically in the tissues from choline with the aid of an actylase or in vitro by reaction of choline chloride with acetic anhydride