EFFECTOR

effector

(noun) an organ (a gland or muscle) that becomes active in response to nerve impulses

effector

(noun) a nerve fiber that terminates on a muscle or gland and stimulates contraction or secretion

effecter, effector

(noun) one who brings about a result or event; one who accomplishes a purpose

Source: WordNet® 3.1

Noun

effector (plural effectors)

(biology) Any muscle, organ etc. that can respond to a stimulus from a nerve.

(biology) The part of a nerve that carries a stimulus to a muscle etc.

(biology) Any small molecule that effects the function of an enzyme by binding to an allosteric site.

An actuator.

Source: Wiktionary

Ef*fect"or, n. Etym: [L.]

Definition: An effecter. Derham.

Source: Webster’s Unabridged Dictionary 1913 Edition