Definition of noninvasive in US English:



  • 1(of medical procedures) not requiring the introduction of instruments into the body.

    ‘noninvasive techniques such as ultrasound’
    • ‘Routine veterinary examinations can utilize non-invasive procedures such as ultrasounds, X-rays, and blood and urine tests.’
    • ‘Collection of urine being a non-invasive procedure it is an ideal specimen especially in children with congenital infections.’
    • ‘Those non-invasive procedures are the newest and most popular weapon in the arsenal against aging.’
    • ‘These new groups increasingly took on the responsibilities of many types of invasive and non-invasive procedures.’
    • ‘MRI angiography is a unique non-invasive method of imaging blood vessels without using contrast medium.’
  • 2(of a cancerous disease) not tending to spread.

    • ‘The oral melanomas are more likely to be flat and thin, amelanotic, and may be detected at a noninvasive or early invasive stage.’
    • ‘Adenocarcinomas with mixed subtypes frequently contain regions of noninvasive tumor at the periphery of invasive tumor.’
    • ‘This 32 percent reduction was evident for invasive and noninvasive cancers.’
    1. 2.1 (of plants) not tending to spread undesirably.