Present participle of 'contuse'; the action of bruising or injuring tissue by blunt force.
From 'contuse' plus the -ing suffix to form the present participle. Standard English verb morphology applied to the Latin-derived medical term.
In medical training videos or forensic reports, you might hear 'the blunt object was contusing the muscle tissue'—it's the active, ongoing version of the injury, emphasizing the moment of impact and tissue damage happening.
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