Present participle of convalesce; currently in the process of recovering strength and health after illness or surgery.
From Latin 'convalescere,' with the English present participle suffix '-ing,' which comes from Old English '-ung.'
You're more likely to hear 'recovering' in modern English, but 'convalescing' survives in formal medical contexts and older literature, giving it a slightly Victorian or dignified tone that 'recovering' lacks.
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