Definition from Wiktionary, the free dictionary
Alternative forms 
- receptour (obsolete, rare)
- IPA: /ɹɪˈsɛptə/
receptor (plural receptors)
- (biochemistry, medicine) A protein on a cell wall that binds with specific molecules so that they can be absorbed into the cell in order to control certain functions.
- 2001: In the target organ, the drug is recognised by ‘receptors’. These are large molecules, usually proteins, to which the drug binds tightly and with a high degree of specificity. — Leslie Iversen, Drugs: A Very Short Introduction (Oxford 2001, p. 24)
- (biology) Any specialized cell or structure that responds to sensory stimuli.
Derived terms 
Related terms 
a protein on a cell wall that responds to sensory stimuli
any specialized cell or structure that responds to sensory stimuli
receptor m (plural receptores)