receptor

noun

re·​cep·​tor ri-ˈsep-tər 

: receiver: such as

a

: a cell or group of cells that receives stimuli : sense organ

b

: a chemical group or molecule (such as a protein) on the cell surface or in the cell interior that has an affinity for a specific chemical group, molecule, or virus

Examples of receptor in a Sentence

Recent Examples on the Web

One blocks the receptor binding protein, which the virus uses to attach to human cells. — William A. Haseltine, Forbes.com, 2 July 2026

This is the first time GLP-1s (glucagon-like peptide-1 receptor agonists) will be covered by insurance when used solely for weight loss. — Melissa Rudy, FOXNews.com, 1 July 2026

The temporary program, which runs until the end of 2027, is the first opportunity for most older adults to get GLP-1s, short for glucagon-like peptide-1 receptor agonists, covered by insurance when used strictly for weight loss. — Ali Swenson, Los Angeles Times, 1 July 2026

Anastrozole, a medication commonly prescribed to treat hormone receptor-positive breast cancer after menopause, can accelerate bone loss by lowering estrogen levels. — Taylor Lane, Flow Space, 30 June 2026

Word History

First Known Use

1898, in the meaning defined above

Phrases Containing receptor

• alpha-receptor
• beta-receptor
• selective estrogen receptor modulator
• stretch receptor
• T cell receptor

Rhymes for receptor

• acceptor
• preceptor
• adrenoceptor
• baroreceptor
• photoreceptor
• chemoreceptor
• interceptor
• scepter
• sceptre

Kids Definition

receptor

noun

re·​cep·​tor ri-ˈsep-tər 

1

: a cell or group of cells that receives stimuli : sense organ

2

: a molecule (as protein) on the surface or in the inside of a cell that recognizes and joins to specific molecules causing a certain activity within the cell to begin

Medical Definition

receptor

noun

re·​cep·​tor ri-ˈsep-tər 

1

: a cell or group of cells that receives stimuli : sense organ

2

: a chemical group or molecule (as a protein) on the cell surface or in the cell interior that has an affinity for a specific chemical group, molecule, or virus

3

: a cellular entity (as a beta-receptor or alpha-receptor) that is a postulated intermediary between a chemical agent (as a neurohormone) acting on nervous tissue and the physiological or pharmacological response