[ streyt-lahyn ]

  1. Machinery.

    • noting a machine or mechanism the working parts of which act or are arranged in a straight line.

    • noting a mechanism for causing one part to move along a straight line.

  2. Accounting. denoting uniform allocation, as in calculating the total depreciation over the life of a depreciable asset, dividing that into equal parts, and depreciating each segment at regular intervals.

Origin of straight-line

First recorded in1835–45

Words Nearby straight-line Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use straight-line in a sentence

British Dictionary definitions for straight-line


  1. (of a machine) having components that are arranged in a row or that move in a straight line when in operation

  2. of or relating to a method of depreciation whereby equal charges are made against gross profit for each year of an asset's expected life

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