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Noun effector has 3 senses
effecter, effector - one who brings about a result or event; one who accomplishes a purpose--1 is a kind of person, individual, someone, somebody, mortal, human, soul
 
effector - a nerve fiber that terminates on a muscle or gland and stimulates contraction or secretion--2 is a kind of nerve fiber, nerve fibre
 --2 has parts: end-plate, endplate, motor end plate
 
 effector - an organ (a gland or muscle) that becomes active in response to nerve impulses--3 is a kind of organ
 Antonyms:  sense organ, sensory receptor, receptor
 
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