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Definition of receptor

receptor

/rɪˈsɛptər/
re · cep · tor

Plural:receptors
•
Adjective:receptorial
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receptor Lexical Profile

receptor Game Scores & Validity

• noun

1

A specialized cell, organ, or sensory nerve ending that responds to external or internal stimuli (such as light, heat, pressure, or sound) and transmits a signal to a sensory nerve.

Example

"When you touch a hot stove, pain receptors in your skin immediately send warning signals to your brain."


2

A protein molecule located on the surface of or within a cell that recognizes and binds to a specific chemical substance, such as a hormone, neurotransmitter, antigen, or drug, initiating a physiological response.

Example

"Insulin binds to specific receptors on the cell membrane to allow glucose to enter the cell."

• Rhymes for receptor

Word Origin & Etymology

Borrowed from Latin receptor ('a receiver'), derived from recipere ('to receive, take back'), from re- ('back') and capere ('to take'). The biological sense of a sensory nerve ending or cellular binding site emerged at the turn of the 20th century.

Usage Trend

Historical frequency of usage in published text.

180019102020

Cite this Entry


Wordmom. (2026). Definition of Receptor. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/receptor
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