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gamma-aminobutyric acid

American  
[gam-uh uh-mee-noh-byoo-tir-ik, -am-uh-noh-] / ˈgæm ə əˌmi noʊ bjuˈtɪr ɪk, -ˌæm ə noʊ- /

noun

  1. GABA.


gamma-aminobutyric acid British  
/ ˌɡæməəˌmiːnəuːbjʊˈtɪrɪk /

noun

  1. the full name for GABA

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

gamma-aminobutyric acid Scientific  
/ găm′ə-ə-mē′nō-byo̅o̅-tîrĭk,-ăm′ə- /
  1. An amino acid occurring in the brain as a neurotransmitter that acts to inhibit the transmission of nerve impulses. Certain antianxiety drugs, called benzodiazepines, mimic the actions of gamma-aminobutyric acid. Chemical formula: C 4 H 9 NO 2 .


Etymology

Origin of gamma-aminobutyric acid

First recorded in 1960–65; amino- + butyric acid

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

The team also discovered that the brain regions showing the greatest synaptic losses tended to contain high concentrations of receptors for important neurotransmitters, including serotonin, gamma-aminobutyric acid and glutamate.

From Science Daily Aug. 20, 2026

Normal human consciousness is tied to inhibitory neurotransmitters in the central nervous system called gamma-aminobutyric acid, or GABA.

From Los Angeles Times Sep. 9, 2025

The speed of water flow is controlled by water channels called aquaporin channels, which are controlled by a neurotransmitter called gamma-aminobutyric acid.

From Textbooks Jun. 9, 2022

Within the brain tissue, on the surface of the neurons, he said, are receptors that respond to a neurotransmitter called gamma-aminobutyric acid, or GABA.

From New York Times Apr. 9, 2011

Like other benzodiazepines, it acts on the neurotransmitter gamma-aminobutyric acid, decreasing brain activity and producing a drowsy or calming effect.

From Time Magazine Archive

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