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From Biology-Online Dictionary | Biology-Online Dictionary
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1. A strong pulling or drawing back; withdrawal. Revulsions and pullbacks.

2. A sudden reaction; a sudden and complete change; applied to the feelings. A sudden and violent revulsion of feeling, both in the Parliament and the country, followed. (Macaulay)

3. (Science: medicine) The act of turning or diverting any disease from one part of the body to another. It resembles derivation, but is usually applied to a more active form of counter irritation.

Origin: F. Revulsion, L. Revulsio, fr. Revellere, revulsum, to pluck or pull away; pref. Re- re- _ vellere to pull. Cf. Convulse.