ETHER

• A great composer?

• A real knockout?

• Air beyond the clouds

• Air or heavens, to a poet

• Air up there

• Air, to a poet

• Airwaves

• Airwaves, so to speak

• An anesthetic

• Anesthesia of old

• Anesthetic

• Anesthetic gas

• Anesthetic liquid

• Anesthetic of yore

• Anesthetic option

• Anesthetic, formerly

• Anesthetic, once

• Antiknock additive

• Aristotle's fifth element

• Aromatic liquid formerly used as an anesthetic

• Aromatic solvent

• Astronaut's milieu

• Atmosphere

• Beyond the stratosphere.

• Blue sky

• Book of Mormon book

• Bygone anesthetic

• C4H10O

• Certain anesthetic

• Chloroform cousin

• Chloroform kin

• Chloroform substitute

• Clear blue sky

• Clear sky

• Colorless, flammable liquid

• Common anesthetic

• Common solvent

• Composition of outer space, in old belief

• Composition of the stars, in old belief

• Compound number?

• Cosmos

• Cousin of chloroform

• Cyberspace

• Cyberspace, with the

• Dentist's gas

• Dentist's supply, once

• Diethyl oxide

• Dimethyl ___ (aerosol propellant)

• Discontinued number

• Discovery of a Spanish chemist in 1275

• Drug of choice in The Cider House Rules

• Early anesthesia

• Early number?

• Early surgery aid

• Earth's envelope

• Empyrean

• Erstwhile anesthetic

• Fifth classical element

• Fifth element, per Aristotle

• Firmament

• Flammable anesthetic

• Flammable liquid

• Flammable solvent

• Former anesthetic

• Former number?

• Heavenly space

• Heavens

• Heavens, poetically

• Hospital room filled with the gas (5)

• Imaginary substance

• Inhalant anesthetic of the past

• Inhalation anesthetic of old

• Inhalation anesthetic, once

• Inhaled anesthetic of old

• It can knock people out

• It can knock you out

• It can put you out

• It could knock you out

• It put people to sleep, once

• It puts people out

• It'll knock you out

• It's a gas

• It's a knockout

• Kin of chloroform

• Knock-out gas, once

• Knockout choice, once

• Knockout drops

• Knockout gas

• Knockout stuff

• Light gas

• Medieval atmosphere

• Nitrous oxide predecessor

• Novocain precursor

• Novocain predecessor

• Number no longer used

• Number that might be used when counting backward from 100?

• Number that's no longer used

• Obsolete anesthetic

• Old anesthetic

• Old hospital administration

• Old hospital supply

• Old knock-out fumes

• Old knockout agent

• Old knockout cause

• Old number

• Old operating room substance

• Old pre-op inhalant

• Old sleep aid?

• Old sleep inducer

• Old surgery aid

• Old-fashioned anesthetic

• Old-style anesthetic

• Old-time anaesthetic

• Old-time knock-out gas

• Old-time knockout

• Once-popular anesthetic

• One on it may be out of it

• One-time anesthetic

• One-time surgery aid

• Onetime dental anesthetic

• Operating room substance, once

• Organic compound

• Out-of-style anesthetic

• Out-of-use anesthetic

• Outdated anesthetic

• Outer regions of space

• Outer space

• Outer space alien and the girl (5)

• Outmoded anesthetic

• Outmoded knockout

• Part of the gasoline additive M.T.B.E.

• Pass

• Potent anesthetic

• Powerful anesthetic

• Pre-Novocain stuff

• Pre-op inhalant, once

• Preoperative anesthetic of old

• Preoperative delivery of old

• Preoperative delivery, once

• Preparation for drilling?

• Procaine predecessor

• Rarefied air

• Regions of space beyond the atmosphere

• Sleep inducer

• Solvent

• Solvent, reagent, or anesthetic

• Space out yonder

• Space, poetically

• Space, to poets

• Standard anesthetic, once

• Subject of the Michelson-Morley experiment

• The clear sky

• The far-blue yonder

• The heavens

• The heavens, to poets

• The Michelson-Morley experiment disproved its existence

• The wild blue yonder

• There was a time it could knock you out

• Upper air

• Upper atmosphere

• Upper region of space

• Upper regions

• Upper regions of space, figuratively

• Upper sky

• Upper space

• Volatile solvent

• Welsh alt-rock band

• What a knockout!

• Wide blue yonder

• A medium that was once supposed to fill all space and to support the propagation of electromagnetic waves

• A colorless volatile highly inflammable liquid used as an inhalation anesthetic

• (archaic) the fifth and highest element after air and earth and fire and water

• Was believed to be the substance composing all heavenly bodies

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- acetoacetic ether

- cellulose ether

- methyl ether

• эфир