1. Navigation. the distance due west made good on any course tending westward; westerly departure.
  2. Surveying. a distance west from a north-south reference line.

Origin of westing

First recorded in 1620–30; west + -ing1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for westing

Historical Examples of westing

British Dictionary definitions for westing


  1. nautical movement, deviation, or distance covered in a westerly direction, esp as expressed in the resulting difference in longitude
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