ODD

adjective Etymology: Middle English ~e, from Old Norse ~i point of land, triangle, ~ number; akin to Old English ord point of a weapon Date: 14th century 1. being without a corresponding mate , b. left over after others are paired or grouped, separated from a set or series, 2. somewhat more than the indicated approximate quantity, extent, or degree, b. left over as a remainder , constituting a small amount , 3. being any of the integers (as -3, -1, +1, and +3) that are not exactly divisible by two, marked by an ~ number of units, being a function such that f (- x ) = - f ( x ) where the sign is reversed but the absolute value remains the same if the sign of the independent variable is reversed, 4. not regular, expected, or planned , encountered or experienced from time to time ; occasional , having an out-of-the-way location ; remote , differing markedly from the usual or ordinary or accepted ; peculiar , see: strange ~ness noun