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c.1730, a method of digging ore, from French manipulation, from manipule "handful" (a pharmacists' measure), from Latin manipulus "handful, sheaf, bundle," from manus "hand" (see manual) + root of plere "to fill" (see pleio-). Sense of "skillful handling of objects" is first recorded 1826; extended 1828 to "handling of persons" as well as objects.
manipulation ma·nip·u·la·tion (mə-nĭp'yə-lā'shən)
The act or the practice of manipulating.
The state of being manipulated.