- 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.
- 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 in 1835–45
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for straight-line
Only once it is measured does it appear to have taken the straight-line path.The 6 Smartest Ideas From Stephen Hawking's New Book
September 10, 2010
Lenses of this kind are called rectilinear, or straight-line producing.How it Works
They are the straight-line engine, the V-type, and the radial.The Romance of Aircraft
Lawrence Yard Smith
He then gave a neat geometric proof, suggested by Mannheim, for his straight-line "compound compass."
Watt combined his straight-line linkage with a pantograph, one link becoming a member of the pantograph.
Throughout the 19th century the term "parallel motion" was used indiscriminately to refer to any straight-line linkage.
- (of a machine) having components that are arranged in a row or that move in a straight line when in operation
- 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