- 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.
The team exposed excitatory neurons to radiation or the chemotherapy drug doxorubicin, both of which can damage DNA and place cells under severe stress.
From Science Daily ● Jul. 24, 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
This ultimately stimulates the release of more glutamate, which helps send excitatory signals between brain cells.
From The Wall Street Journal ● Mar. 17, 2026
Specifically, the researchers found that excitatory neurons emerged as the most affected cell group, with transcriptional changes implicating neurodevelopment and synapse-related pathways.
From Science Daily ● May 23, 2024
The pyramidal tract conveys impulses that inhibit muscle tonus, while the rubro-spinal tract is the path by which excitatory impulses travel.
From Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition. by Alexander Miles
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.
