[ non-in-vey-siv ]
/ ˌnɒn ɪnˈveɪ sɪv /
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adjective Medicine/Medical.

not invading adjacent healthy cells, blood vessels, or tissues; localized: a noninvasive tumor.
not entering or penetrating the body or disturbing body tissue, especially in a diagnostic procedure.



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Origin of noninvasive

First recorded in 1970–75; non- + invasive

OTHER WORDS FROM noninvasive

non·in·va·sive·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

Example sentences from the Web for noninvasive

  • NextMind’s noninvasive brain-computer interfaceParis-based NextMind has developed a real-time brain-computer interface that reads your brain’s response to what you’re looking at, and then does what your mind asks the machine to do.

  • This test is a noninvasive cat scan (CT scan) of your heart to look for coronary calcium buildup.

    Could a Daily Aspirin Be Deadly?|Arthur Agatston, M.D.|February 23, 2010|DAILY BEAST

British Dictionary definitions for noninvasive

/ (ˌnɒnɪnˈveɪsɪv) /


(of medical treatment) not involving the making of a relatively large incision in the body or the insertion of instruments, etc, into the patient
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for noninvasive

[ nŏn′ĭn-vāsĭv ]


Not penetrating the body, as by incision. Used especially of a diagnostic procedure.
Not invading healthy tissue.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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