| nociceptor | A peripheral nerve organ or mechanism for the reception and transmission of painful or injurious stimuli. Origin: noci-+ L. Capio, to take (05 Mar 2000) |
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| nociceptors | Peripheral receptors for pain. Nociceptors include receptors which are sensitive to painful mechanical stimuli, extreme heat or cold, and chemical stimuli. All nociceptors are free nerve endings. (12 Dec 1998) |