[non-in-vey-siv] /ˌnɒn ɪnˈveɪ sɪv/

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

also noninvasive, by 1850, from non- + invasive.

noninvasive non·in·va·sive (nŏn’ĭn-vā’sĭv)


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