Dictionary Meaning and Definition on 'Counterclockwise'
adj : in the direction opposite to the rotation of the hands of a
clock [syn: anticlockwise, contraclockwise] [ant: clockwise]
adv : in a direction opposite to the direction in which the hands
of a clock move; "please move counterclockwise in a
circle!" [syn: anticlockwise] [ant: clockwise]
Wikipedia Meaning and Definition on 'Counterclockwise'
A clockwise (typically abbreviated as CW) motion is one that proceeds 'like the clock's hands': from the top to the right, then down and then to the left, and back to the top. In a mathematical sense, a circle defined parametrically in a positive Cartesian plane by the equations x = sin t and y = cos t is traced clockwise as t increases in value. Described another way, continually turning right is clockwise motion, as viewed from above. The opposite sense of rotation or revolution is (in US and Canadian English) counterclockwise (CCW), or (in British English) anticlockwise (ACW).
Before clocks were commonplace, the terms "sunwise" and "deiseil" from the Scottish Gaelic language and from the same root as the Latin "dexter" ("right") were used for clockwise. "Widdershins" or "withershins" (from Middle Low German "weddersinnes", "opposite course") was used for anticlockwise.[See more about Counterclockwise at Dictionary 3.0 Encyclopedia]
Words and phrases related to 'Counterclockwise'