UNDETERMINED

, is sometimes used for INDETERMINATE.

UNDULATORY Motion, is applied to a motion in the air, by which its parts are agitated like the waves of the sea; as is supposed to be the case when the string of a musical instrument is struck. This Undulatory motion of the air is supposed the matter or caufe of sound.—Instead of the Undulatory, some authors choose to call this a vibratory motion.

UNEVEN Number, the same as odd number, or such as cannot be divided by 2 without leaving 1 remaining. The series of Uneven Numbers are 1, 3, 5, 7, 9, &c. See Number, and Odd Number.

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Entry taken from A Mathematical and Philosophical Dictionary, by Charles Hutton, 1796.

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