Fortin barometer

noun

For·​tin barometer

(ˈ)fȯr¦taⁿ-

variants or less commonly fortin's barometer

: a cup barometer having an adjustable cistern

Word History

Etymology

after Jean Fortin †1831 French physicist and engineer, its inventor

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!