1
: being a mechanical linkage or equivalent device designed to produce or copy motion in a straight line
2
: having the principal parts arranged in a straight line
3
: marked by a uniform spread and especially in equal segments over a given term
straight-line amortization
straight-line depreciation
4
: occurring, measured, or made in or along a straight line
straight-line motion
straight-line extrapolation

Examples of straight-line in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The second one hit—straight-line winds—and passed over us, too. Alex Abramovich, New Yorker, 22 Dec. 2025 Now, this is for linear, straight-line motion. Phil Plait, Scientific American, 18 Dec. 2025 That’s why most projects afterward focused more on straight-line folding. Georgina Jedikovska, Interesting Engineering, 6 Dec. 2025 The set has an oversized fit that’s far from slouchy, unique seam detailing, and a straight-line design that looks super polished. Clara McMahon, PEOPLE, 5 Dec. 2025 See All Example Sentences for straight-line

Word History

First Known Use

1772, in the meaning defined at sense 4

Time Traveler
The first known use of straight-line was in 1772

Browse Nearby Words

Cite this Entry

“Straight-line.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/straight-line. Accessed 24 Dec. 2025.

Legal Definition

straight-line

adjective
: marked by equal payments over a given term
using the straight-line method of depreciation
Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!