noci-, noc- (Latin: to injure; injury, trauma; a noxious or deleterious agent or influence).nociassociation: 
The unconscious discharge of nervous energy under the stimulus of trauma, as in surgical shock.
 
nociceptive: 
Receiving injury; said of a receptive neuron for painful sensations.
 
nociceptor: 
A receptor that is stimulated by injury; a receptor for pain.
 
nocifensor: 
A name for a system of nerves in the skin and mucous membranes that are concerned with local defense against injury.
 
noci-influence: Injurious or traumatic influence.
nociperception: 
The perception by the system of injurious (traumatic) stimuli.
 
polymodal nociceptor: 
A nociceptor activated by heat, mechanical pressure, or chemical mediators of inflammation; released as a result of tissue injury.
 
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