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From The Collaborative International Dictionary of English v.0.48:
Quarantine \Quar`an*tine"\, v. t. [imp. & p. p. Quarantined; p. pr. & vb. n. Quarantining.] To compel to remain at a distance, or in a given place, without intercourse, when suspected of having contagious disease; to put under, or in, quarantine. [1913 Webster]