: a monoamine C8H11NO2 that is a decarboxylated form of dopa and that occurs especially as a neurotransmitter in the brain

Examples of dopamine in a Sentence

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Nicotine dependence alters brain chemistry by stimulating neurotransmitters like dopamine that govern mood and pleasure, according to Cleveland Clinic. — Khloe Quill, FOXNews.com, 24 Sep. 2026 Movement research has long shown that even brief bursts increase circulation and prompt the release of dopamine and serotonin, which is the neurochemistry behind why a five-minute walk or stretch break shifts mood. — Hanna Wickes, Kansas City Star, 22 Sep. 2026 Activation of these receptors also influences the release of other neurotransmitters, including dopamine, which plays an important role in reward and reinforcement. — Hasmeena Kathuria, The Conversation, 22 Sep. 2026 Even short bursts increase circulation, signal safety to the nervous system and prompt the release of dopamine and serotonin. — Hanna Wickes, Miami Herald, 22 Sep. 2026 See All Example Sentences for dopamine

Word History

Etymology

dopa + amine

First Known Use

1959, in the meaning defined above

Time Traveler
The first known use of dopamine was in 1959

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Cite this Entry

“Dopamine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dopamine. Accessed 26 Sep. 2026.

Medical Definition

: a monoamine C8H11NO2 that is a decarboxylated form of dopa and occurs especially as a neurotransmitter in the brain and as an intermediate in the biosynthesis of epinephrine see intropin

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