What is the origin of perambulate?

Perambulate, “to walk or travel about; stroll,” is in origin a Scots word that meant “to travel through (land) and inspect it for measuring or dividing or determining ownership,” a process called perambulation. Perambulate comes from Latin perambulātus, the past participle of perambulāre “to walk through, walk about, walk around in, tour, make the rounds,” a compound of the preposition and prefix per, per– “through” and the simple verb ambulāre “to walk; go about; travel; march” (source of English amble). Perambulate entered English in the mid-15th century.