noun, feminine/aθetilkolinesteˈɾasa/plural: acetilcolinesterasas
acetilcolinesterasa is feminine in Spanish.
acetylcholinesterase (an enzyme that catalyzes the hydrolysis of the neurotransmitter acetylcholine into choline and acetic acid)
Etymology tree Spanish acetil Spanish colina Spanish acetilcolina Spanish éster Spanish -asa Spanish acetilcolinesterasa From acetilcolina + éster + -asa.