n.
Pronunciation: ə - ˌ se-t ə l- ' k ō - ˌ l ē n, - ˌ s ē -; ' a-s ə - ˌ t ē l-
Function: noun
Etymology: International Scientific Vocabulary
Date: 1906
: a neurotransmitter C 7 H 17 NO 3 released at autonomic synapses and neuromuscular junctions and formed enzymatically in the tissues from choline