Counterclockwise

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Dictionary Meaning and Definition on 'Counterclockwise'

Counterclockwise Meaning and Definition from WordNet (r) 2.0
    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]
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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.

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Counterclockwise Sample Sentences in News


  • Seattle helicopter crash: Was broken tail rotor the cause?
    Video recordings near the Seattle crash site shows the helicopter began rotating counterclockwise during takeoff.  The KOMO-TV chopper crashed and burst into flames, killing two people earlier this week. Read more on this news related to 'Counterclockwise'
  • Videos show copter rotated 360 degrees shortly after lifting off, before fatal crash
    SEATTLE — Surveillance videos show the KOMO-TV news helicopter rotated counterclockwise as it lifted off from its helipad and ascended slightly in a near-level altitude, but it continued rotating counterclockwise 360 degrees before it pitched forward in a nose low … Read more on this news related to 'Counterclockwise'
  • News Local
    (Counterclockwise left to right) Elmer Elson principal Anna Greenwood and the student union executive members Daniel Paquette, Jason Roberts, Cole Hughes and Cory Commandeur lower the flag on the morning of March 12, while students and staff look on. Read more on this news related to 'Counterclockwise'

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