American English

How to pronounce ether

nounC1
EEther

/ˈi.θɚ/

2 syllables · Stress the first syllable.

a clear, very flammable liquid that was once used to make people unconscious during surgery and is now mainly used in science to dissolve other substances

Practice out loud

Meanings & examples

nountechnicalless common

a clear, very flammable liquid that was once used to make people unconscious during surgery and is now mainly used in science to dissolve other substances

Ether catches fire very easily.

The lab uses ether as a solvent.

Good to know

Ether catches fire very easily, so keep it away from flames.

Common phrases & grammar

diethyl ether · ether vapor · ether anesthesia

use ether as a solvent

ether is used to dissolve [a substance]

noundated

a substance that people once believed filled all space and carried light

Scientists once believed that light traveled through the ether.

The theory of the ether was later rejected.

Common phrases & grammar

the ether was thought to carry [light]

travel through the ether

Useful expressions

into the ether

into a vague or unknown place where something is lost or forgotten

My question disappeared into the ether.

Related words & forms