Relating to or occurring in paroxysms.
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par·ox·ys·mal .par-ək-'siz-məlalso pə-.räk- adj of, relating to, or marked by paroxysms <the hypertension may be either sustained or \paroxysmal (D. A. Calhoun )(et al)>
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par·ox·ys·mal (par″ok-sizґməl) recurring in paroxysms.Medical dictionary. 2011.