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receptor (n.)

mid-15c. (late 13c., Anglo-French), receptour, "a knowing harborer of criminals, heretics, etc.," from Old French receptour or directly from Latin receptor, agent noun from recipere  "to hold, contain" (see receive). Molecular biology sense is from 1900. Compare receiver. A receptory (early 15c., from Medieval Latin) was, among other definitions, an alchemical flask for receiving distillates.

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Definitions of receptor from WordNet

receptor (n.)
a cellular structure that is postulated to exist in order to mediate between a chemical agent that acts on nervous tissue and the physiological response;
receptor (n.)
an organ having nerve endings (in the skin or viscera or eye or ear or nose or mouth) that respond to stimulation;
Synonyms: sense organ / sensory receptor
From wordnet.princeton.edu