The present participle of 'ambulate'; currently walking or moving about from place to place.
From Latin 'ambulare' (to walk) + '-ing' (English gerund/participle suffix). Standard formation of the ongoing action or state of walking.
Medical staff use 'ambulating patient' to signal improvement—it's the opposite of bedridden—and the term's Latin roots remind us that even modern hospitals speak a language shaped by ancient Rome.
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