ether.
ether (a mystical substance formerly thought to fill the upper atmosphere, firmament, the sky, the heavens)
Meaning & usage
ether (a mystical substance formerly thought to fill the upper atmosphere, firmament, the sky, the heavens)
luminiferous aether (a substance formerly thought to fill all unoccupied space that allowed electromagnetic waves to pass through it and interact with matter, without interacting with them itself)
ether, diethyl ether (C₄H₁₀O)
ether, diethyl ether (C₄H₁₀O) an ether (one of a class of organic compounds containing an oxygen atom bonded to two hydrocarbon groups)
Where this word comes from
Borrowed from Latin aether.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.