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Meaning of etherion | Babel Free

Noun CEFR B2

Definitions

A gas formerly believed to exist in air, initially identified by Charles F. Brush in 1898. He estimated that its density was one ten-thousandth of hydrogen.

countable, historical, uncountable

CEFR level

B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.
See all B2 English words →

See also

etheriser etherism etherist etherization etherizer Etherley

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