noninvasive
adjective
non·in·va·sive
ˌnän-in-ˈvā-siv 
-ziv
1
: not tending to spread
specifically
: not tending to infiltrate and destroy healthy tissue
noninvasive cancer of the bladder
2
: not being or involving an invasive medical procedure
noninvasive imaging techniques
noninvasively
adverb
Examples of noninvasive in a Sentence
noninvasive techniques of measuring brain activity
Recent Examples on the Web
How the brain test works The noninvasive test is an electroencephalogram, or EEG, which involves placing small electrodes on the scalp to record electrical activity in the brain.
—
Kristen Rogers, CNN Money, 12 Oct. 2025
Integrating such MOFs into sensor hardware would allow for sensitive, noninvasive screening for these two diseases, based on quantifiable breath markers.
—Bohong Zhang, The Conversation, 10 Oct. 2025
Between the first 10 hours and three days after birth, the team observed how the newborns’ brains reacted to German, Hebrew and French by using functional near-infrared spectroscopy (fNIRS), a noninvasive imaging technique that measures changes in blood oxygenation in the brain.
—Meghie Rodrigues, Scientific American, 7 Oct. 2025
This system sets a new standard for noninvasive BCI performance.
—Mrigakshi Dixit, Interesting Engineering, 1 Sep. 2025
See All Example Sentences for noninvasive
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Kristen Rogers, CNN Money, 12 Oct. 2025
Integrating such MOFs into sensor hardware would allow for sensitive, noninvasive screening for these two diseases, based on quantifiable breath markers.
—Bohong Zhang, The Conversation, 10 Oct. 2025
Between the first 10 hours and three days after birth, the team observed how the newborns’ brains reacted to German, Hebrew and French by using functional near-infrared spectroscopy (fNIRS), a noninvasive imaging technique that measures changes in blood oxygenation in the brain.
—Meghie Rodrigues, Scientific American, 7 Oct. 2025
This system sets a new standard for noninvasive BCI performance.
—Mrigakshi Dixit, Interesting Engineering, 1 Sep. 2025
See All Example Sentences for noninvasive
Cite this Entry
“Noninvasive.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/noninvasive. Accessed 20 Oct. 2025.
Copy CitationMedical Definition
noninvasive
adjective
non·in·va·sive
ˌnän-in-ˈvā-siv, -ziv
1
: not tending to spread
specifically
: not tending to infiltrate and destroy healthy tissue
noninvasive cancer of the bladder
2
: not being or involving an invasive medical procedure
noninvasive imaging techniques that do not require the injection of dyes
noninvasively
adverb
noninvasiveness
noun
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