Relating to or marked by intensity; denoting a form of treatment by means of very large doses or of substances possessing great strength or activity.
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in·ten·sive in-'ten(t)-siv adj of, relating to, or marked by intensity esp involving the use of large doses or substances having great therapeutic activity compare AGGRESSIVE (3)
in·ten·sive·ly adv
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in·ten·sive (in-tenґsiv) of great force or intensity; see also intensive care unit, under unit.Medical dictionary. 2011.