• synonyms


adjective Medicine/Medical.
  1. not invading adjacent healthy cells, blood vessels, or tissues; localized: a noninvasive tumor.
  2. 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
Related formsnon·in·va·sive·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for noninvasive


  1. (of medical treatment) not involving the making of a relatively large incision in the body or the insertion of instruments, etc, into the patient
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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

noninvasive in Medicine


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