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receptor

Syllabification: re·cep·tor
Pronunciation: /rēˈseptər
 
/

Definition of receptor in English:

noun

Physiology
1An organ or cell able to respond to light, heat, or other external stimulus and transmit a signal to a sensory nerve.
Example sentences
  • In the special sense organs, such as the eye and the ear, highly specialized receptors respond to light and sound.
  • Our own skin contains a battery of touch receptors that produce nerve signals when pressed.
  • However, they have some ability to sense light through receptors in the epidermis.
1.1A region of tissue, or a molecule in a cell membrane, that responds specifically to a particular neurotransmitter, hormone, antigen, or other substance.
Example sentences
  • When the neurotransmitter binds with the receptor, the next cell responds accordingly.
  • Hormones work by docking with a specific receptor on a cell, which then responds by turning on genes.
  • Finally, the presence of a specific receptor in the target tissue is required for a hormone to have its effect.

Origin

early 20th century: coined in German from Latin receptor, from recept- 'taken back', from the verb recipere (see receive).

Definition of receptor in:

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