1
a
: the rarefied element formerly believed to fill the upper regions of space
b
: the upper regions of space : heavens
2
a
: a light volatile flammable liquid C4H10O used chiefly as a solvent and especially formerly as an anesthetic
b
: any of a class of organic compounds characterized by an oxygen atom attached to two carbon atoms
Examples of ether in a Sentence
The balloon disappeared into the ether.
Recent Examples on the Web
Unlike bitcoin, ether and other cryptocurrencies, stablecoins are designed to have a stable value against a non-crypto asset, usually the U.S. dollar.
—
Tanaya MacHeel, CNBC, 23 Apr. 2025
And a January 2020 study indicated that one flame retardant—polybrominated diphenyl ethers, or PBDEs—could affect a child’s intellectual development.4
That’s not to say nothing is being done or that zero guardrails are in place.
—Beth Ann Mayer, Parents, 23 Apr. 2025
After a series of trials with ether, Morton conducted a public demonstration, which successfully numbed the patient’s pain and marked a major breakthrough in medical practice.
—Ella Jeffries, Smithsonian Magazine, 8 Apr. 2025
Fidelity is already tinkering with a stablecoin under its digital assets division, which currently offers custody and trading for bitcoin, ether and litecoin.
—Nina Bambysheva, Forbes.com, 27 Mar. 2025
See All Example Sentences for ether
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Tanaya MacHeel, CNBC, 23 Apr. 2025
And a January 2020 study indicated that one flame retardant—polybrominated diphenyl ethers, or PBDEs—could affect a child’s intellectual development.4
That’s not to say nothing is being done or that zero guardrails are in place.
—Beth Ann Mayer, Parents, 23 Apr. 2025
After a series of trials with ether, Morton conducted a public demonstration, which successfully numbed the patient’s pain and marked a major breakthrough in medical practice.
—Ella Jeffries, Smithsonian Magazine, 8 Apr. 2025
Fidelity is already tinkering with a stablecoin under its digital assets division, which currently offers custody and trading for bitcoin, ether and litecoin.
—Nina Bambysheva, Forbes.com, 27 Mar. 2025
See All Example Sentences for ether
Cite this Entry
“Ether.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ether. Accessed 29 Apr. 2025.
Copy CitationKids Definition
Medical Definition
ether
noun1
: a medium that in the wave theory of light permeates all space and transmits transverse waves
2
a
: a light volatile flammable liquid C4H10O used especially formerly chiefly as an anesthetic
called also diethyl ether, ethyl ether, ethyl oxide
b
: any of various organic compounds characterized by an oxygen atom attached to two carbon atoms
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