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(chiefly of drugs) producing sudden and involuntary muscle contractions.
- ‘Experimental studies have confirmed that folates are highly convulsant if the blood-brain barrier is circumvented.’
- ‘This is done by the psychiatric profession under the medical term ‘ECT’ (electro convulsant therapy).’
- ‘Some users, however, report that they become more sensitive to cocaine's anesthetic and convulsant effects even without increasing the amount.’
A convulsant drug.
- ‘The toxic ingredients are of various types, ranging from local irritants to convulsants, hallucinogens, and neurotoxins (nerve poisons).’
- ‘Other herbal extracts, essence of sage which contains camphor, a well-known convulsant, and essence of hysop which contains pinocamphone, a neurotoxin, are commonly encountered ‘natural remedies.’’
- ‘Seizures could be nonepileptic if evoked in the normal brain by treatments, such as electric shock or chemical convulsants, or epileptic when occurring without evident provocation.’
Late 19th century: from French, from convulser, from Latin convuls- pulled violently, wrenched from the verb convellere (see convulse).
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