Breguet hairspring

noun

Bre·​guet hairspring

brəˈgā-

: a flat spiral hairspring whose last outer coil is raised and curved back to a point near the center

Word History

Etymology

after Abraham L. Bréguet †1823 French horologist

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

• More than 250,000 words that aren't in our free dictionary
• Expanded definitions, etymologies, and usage notes
• Advanced search features
• Ad free!