- a receiver (in various senses)
- Biochem. any of a group of substances, mainly proteins, found esp. on the surface of a cell, that combine with specific molecules, hormones, antibodies, drugs, viruses, etc.
- Physiol. a nerve ending or group of nerve endings specialized for the reception of stimuli; sense organ
Origin of receptorMiddle English receptour from Old French from Classical Latin receptor from receptus: see receipt
- Physiology A specialized cell or group of nerve endings that responds to sensory stimuli.
- Biochemistry A molecular structure or site on the surface or interior of a cell that binds with substances such as hormones, antigens, or neurotransmitters or is activated by events such as a change in the concentration of an ion.