instantaneous
adjective
in·stan·ta·neous
ˌin(t)-stən-ˈtā-nē-əs 
-nyəs
1
: done, occurring, or acting without any perceptible duration of time
death was instantaneous
2
: done without any delay being purposely introduced
took instantaneous corrective action
3
: occurring or present at a particular instant
instantaneous velocity
instantaneousness
noun
Examples of instantaneous in a Sentence
We got an almost instantaneous response from the company.
the thunder following the flash of lightning was nearly instantaneous
Recent Examples on the Web
Finance has always been data-driven, but it’s now poised for instantaneous, insight-rich operations.
—
Murugan Lakshmanan, Forbes.com, 8 May 2025
The director can watch in real time and add instantaneous comments, eliminating not just the carbon footprint of shipping and travel, but the energy consumption of continuously rendering and transferring massive files.
—Allison Begalman, HollywoodReporter, 22 Apr. 2025
Lowden is excellent as River Cartwright in Slow Horses, but River is not necessarily a character who garners instantaneous recognition (even for some people who watch the show).
—Fran Hoepfner, Vulture, 10 Apr. 2025
Liftoff is scheduled for 9:46 p.m. EDT (0146 GMT on April 1), though there are three additional instantaneous opportunities during the 4.5-hour-long launch window.
—Mike Wall, Space.com, 30 Mar. 2025
See All Example Sentences for instantaneous
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Murugan Lakshmanan, Forbes.com, 8 May 2025
The director can watch in real time and add instantaneous comments, eliminating not just the carbon footprint of shipping and travel, but the energy consumption of continuously rendering and transferring massive files.
—Allison Begalman, HollywoodReporter, 22 Apr. 2025
Lowden is excellent as River Cartwright in Slow Horses, but River is not necessarily a character who garners instantaneous recognition (even for some people who watch the show).
—Fran Hoepfner, Vulture, 10 Apr. 2025
Liftoff is scheduled for 9:46 p.m. EDT (0146 GMT on April 1), though there are three additional instantaneous opportunities during the 4.5-hour-long launch window.
—Mike Wall, Space.com, 30 Mar. 2025
See All Example Sentences for instantaneous
Cite this Entry
“Instantaneous.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/instantaneous. Accessed 2 Jun. 2025.
Copy CitationKids Definition
instantaneous
adjective
in·stan·ta·neous
ˌin(t)-stən-ˈtā-nē-əs
-nyəs
1
: happening in an instant
2
: done without delay
instantaneously
adverb
instantaneousness
noun
Love words? Need even more definitions?
Merriam-Webster unabridged
Share