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.
Origin of noninvasive
Related formsnon·in·va·sive·ly, adverb
First recorded in 1970–75; non-
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
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British Dictionary definitions for non-invasive
(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
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Word Origin and History for non-invasive
Online Etymology Dictionary, © 2010 Douglas Harper
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.