aneroid

adjective

an·​er·​oid ˈa-nə-ˌrȯid How to pronounce aneroid (audio)
: using no liquid
specifically : operating by the effect of outside air pressure on a diaphragm forming one wall of an evacuated container
aneroid barometer

Word History

Etymology

French anéroïde, from Greek a- + Late Greek nēron water, from Greek, neuter of nearos, nēros fresh; akin to Greek neos new — more at new

First Known Use

circa 1842, in the meaning defined above

Time Traveler
The first known use of aneroid was circa 1842

Dictionary Entries Near aneroid

anerobic

aneroid

aneroid calorimeter

See More Nearby Entries 

Cite this Entry

“Aneroid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/aneroid. Accessed 22 Nov. 2024.

Copy Citation

Share

Medical Definition

aneroid

adjective
an·​er·​oid ˈan-ə-ˌrȯid How to pronounce aneroid (audio)
: containing no liquid or actuated without the use of liquid
an aneroid manometer
Love words? Need even more definitions?

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

Popular in Grammar & Usage

See All

How to Use Em Dashes (—), En Dashes (–) , and Hyphens (-)

Plural and Possessive Names: A Guide

The Difference Between 'i.e.' and 'e.g.'

Why is '-ed' sometimes pronounced at the end of a word?

What's the difference between 'fascism' and 'socialism'?
See All

Popular in Wordplay

See All

8 Words with Fascinating Histories

8 Words for Lesser-Known Musical Instruments

Birds Say the Darndest Things

10 Words from Taylor Swift Songs (Merriam's Version)

10 Scrabble Words Without Any Vowels
See All

Games & Quizzes

See All
Play Quordle: Guess all four words in a limited number of tries. Each of your guesses must be a real 5-letter word.
Quordle Can you solve 4 words at once?
Play Blossom: Solve today's spelling word game by finding as many words as you can using just 7 letters. Longer words score more points.
Blossom Word Game Pick the best words!
Play Missing Letter: a crossword with a twist. Each of the 25 puzzle words start with a different letter of the alphabet. Which letter is missing?
Missing Letter A daily crossword with a twist
silhouette of a man with a megaphone against a british flag
Another Great British Vocabulary Quiz, Innit? A double-decker quiz with words from across the pond