What do a.m. and p.m. stand for?


[koun-ter-klok-wahyz] /ˌkaʊn tərˈklɒkˌwaɪz/
adjective, adverb
in a direction opposite to that of the normal rotation of the hands of a clock; not clockwise.
Also, contraclockwise; especially British, anticlockwise.
Origin of counterclockwise
1885-90; counter- + clockwise Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
Examples from the web for counterclockwise
  • Mom was the real handyman in our household, because she knew the difference between clockwise and counterclockwise.
  • When faced with the rare snail whose shell formation is counterclockwise, many snakes failed to feed or dropped their prey.
  • With my back to the right wall of the chamber, turning my head to the left makes the interior twist counterclockwise.
  • With my back to the left wall, a right turn tips it counterclockwise, while a left turn tips it clockwise.
  • He can then walk counterclockwise around the coastline.
  • But their counterclockwise rotation produces southward winds on their leading edge.
  • We went counterclockwise, and were unterrified and happy with the pace of the scenery in our direction.
  • The contrary happens with a counterclockwise turning.
  • The spot rotates counterclockwise once every seven days.
  • As a result, the diffraction pattern is slightly rotated, either clockwise or counterclockwise depending on the original light.
British Dictionary definitions for counterclockwise


adverb, adjective
(US & Canadian) in the opposite direction to the rotation of the hands of a clock Also called (in Britain and certain other countries) anticlockwise
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source
Word Origin and History for counterclockwise
adj., adv.

1870, also counter-clockwise; from counter- + clockwise.

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source

Word of the Day

Difficulty index for counterclockwise

Few English speakers likely know this word

Word Value for counterclockwise

Scrabble Words With Friends