- a variation of excitative.
excitatory
Americanadjective
Other Word Forms
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.
This ultimately stimulates the release of more glutamate, which helps send excitatory signals between brain cells.
From The Wall Street Journal • Mar. 17, 2026
These excitatory signals encourage the growth of ‘dendritic spines,’ which can serve as new connection points between cells.
From The Wall Street Journal • Mar. 17, 2026
The researchers found that the most significant gene disruptions occur in excitatory neurons -- the nerve cells that send activating signals -- where nearly 6,000 cause-and-effect interactions revealed extensive genetic rewiring as Alzheimer's progresses.
From Science Daily • Feb. 15, 2026
They found that during sleep, both excitatory and inhibitory connections in the brain become weaker, but they do so asymmetrically, making inhibitory connections weaker than excitatory connections, which causes an increase in excitation.
From Science Daily • Nov. 22, 2024
Their special function seems still somewhat obscure, and Boudier suggests that they may be excitatory organs for the dehiscence of the asci.
From Fungi: Their Nature and Uses by Cooke, M. C. (Mordecai Cubitt)
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
