hairspring

noun
hair·​spring | \ ˈher-ˌspriŋ How to pronounce hairspring (audio) \

Definition of hairspring

: a slender spiraled recoil spring that regulates the motion of the balance wheel of a timepiece

Examples of hairspring in a Sentence

Recent Examples on the Web The double-barrel function includes an Original Straumann hairspring and an interchangeable Moser escapement. Demetrius Simms, Robb Report, 15 Feb. 2022 Several years in the development, the new 330-part UN-621 mechanical caliber is Ulysse Nardin’s first in-house automatic striking movement to be powered by the automatic flying tourbillon with a silicon hairspring, anchor, and escape wheel. Roberta Naas, Forbes, 28 Dec. 2021 The movement is the manufacture caliber MT5400, an automatic chronometer with a non-magnetic silicon hairspring. Carol Besler, Forbes, 24 June 2021 Inside is the caliber 3230, featuring Rolex's signature Chronergy escapement and a blue Parachrom hairspring, with a power reserve of 70 hours. Carol Besler, Forbes, 7 Apr. 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'hairspring.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of hairspring

1830, in the meaning defined above

Buying Guide

Passionate about fitness and wellness tracking? The Reviews team conducted an honest review of the Oura Ring.

Learn More About hairspring

Time Traveler for hairspring

Time Traveler

The first known use of hairspring was in 1830

See more words from the same year

Dictionary Entries Near hairspring

hair spray

hairspring

hairst

See More Nearby Entries 

Statistics for hairspring

Cite this Entry

“Hairspring.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hairspring. Accessed 8 Aug. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

WORD OF THE DAY

Test Your Vocabulary

Commonly Confused Words Quiz

  • vector image of a face with thought expression
  • I went to the ______ store to buy a birthday card.
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Universal Daily Crossword

A daily challenge for crossword fanatics.

TAKE THE QUIZ
Love words? Need even more definitions?

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