Definition of protopathic in English:

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protopathic

Pronunciation: /ˌprōdəˈpaTHik/

adjective

Physiology
Relating to or denoting those sensory nerve fibers of the skin that are capable of discriminating only among such relatively coarse stimuli as heat, cold, and pain. Often contrasted with epicritic.
Example sentences
  • An alternate explanation for the finding is protopathic bias, which can arise in situations where medications are used to treat acute symptoms.

Origin

Mid 19th century: from proto- 'primitive' + Greek pathos 'suffering, feeling' + -ic.

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