reaction time
Americannoun
noun
Etymology
Origin of reaction time
First recorded in 1875–80
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.
Researchers found no significant differences between the groups on tests of reaction time or multitasking.
From Science Daily ● Jul. 27, 2026
The condition could explain why Isak’s knee collapsed, his inability to correct his posture and reduced his reaction time during a fall, Jonathan’s lawyers said.
From The Wall Street Journal ● May 28, 2026
But if the exchanges are open when news arrives, reaction time may become more important.
From Barron's ● Oct. 23, 2025
But for most of us, gradual visual impairment is inevitable, reaction time slows, and night driving becomes more of a challenge.
From Los Angeles Times ● Sep. 30, 2024
In the middle of the 1860s, Donders turned his attention to human reaction time.
From "A Deadly Wandering: A Mystery, a Landmark Investigation, and the Astonishing Science of Attention in the Digital Age" by Matt Richtel
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.
