Apr 2019
According to ancient and medieval science, aether, also spelled æther or ether and also called quintessence, is the material that fills the region of the universe above the terrestrial sphere. noun: aether 1. CHEMISTRY
a pleasant-smelling colorless volatile liquid that is highly flammable. It is used as an anesthetic and as a solvent or intermediate in industrial processes; any organic compound with a structure similar to ether, having an oxygen atom linking two alkyl or other organic groups. plural noun: ethers "methyl t -butyl ether" 2. LITERARY the clear sky; the upper regions of air beyond the clouds. "nasty gases and smoke disperse into the ether" INFORMAL air regarded as a medium for radio. noun: the ether "choral evensong still wafts across the ether" 3. ARCHAIC•PHYSICS
a very rarefied and highly elastic substance formerly believed to permeate all space, including the interstices between the particles of matter, and to be the medium whose vibrations constituted light and other electromagnetic radiation. late Middle English: from Old French, or via Latin from Greek aithēr ‘upper air’, from the base of aithein ‘burn, shine’. Originally the word denoted a substance believed to occupy space beyond the sphere of the moon. ether (sense 3) arose in the mid 17th century and ether (sense 1) in the mid 18th century. noun: ether; noun: aether 1. CHEMISTRY a pleasant-smelling colorless volatile liquid that is highly flammable. It is used as an anesthetic and as a solvent or intermediate in industrial processes; any organic compound with a structure similar to ether, having an oxygen atom linking two alkyl or other organic groups plural noun: ethers "methyl t -butyl ether" 2. LITERARY
the clear sky; the upper regions of air beyond the clouds.
"nasty gases and smoke disperse into the ether"
INFORMAL
air regarded as a medium for radio.
noun: the ether
"choral evensong still wafts across the ether"
3.
ARCHAIC•PHYSICS
a very rarefied and highly elastic substance formerly believed to permeate all space, including the interstices between the particles of matter, and to be the medium whose vibrations constituted light and other electromagnetic radiation; late Middle English: from Old French, or via Latin from Greek aithēr ‘upper air’, from the base of atheism ‘burn, shine’. Originally the word denoted a substance believed to occupy space beyond the sphere of the moon. ether (sense 3) arose in the mid 17th century and ether (sense 1) in the mid 18th century. Ethers are a class of organic compounds that contain an ether group—an oxygen atom connected to two alkyl or aryl groups. They have the general formula R–O–R′, where R and R′ represent the alkyl or aryl groups. Wikipedia Formula: C4H10O
a pleasant-smelling colorless volatile liquid that is highly flammable. It is used as an anesthetic and as a solvent or intermediate in industrial processes; any organic compound with a structure similar to ether, having an oxygen atom linking two alkyl or other organic groups. plural noun: ethers "methyl t -butyl ether" 2. LITERARY the clear sky; the upper regions of air beyond the clouds. "nasty gases and smoke disperse into the ether" INFORMAL air regarded as a medium for radio. noun: the ether "choral evensong still wafts across the ether" 3. ARCHAIC•PHYSICS
a very rarefied and highly elastic substance formerly believed to permeate all space, including the interstices between the particles of matter, and to be the medium whose vibrations constituted light and other electromagnetic radiation. late Middle English: from Old French, or via Latin from Greek aithēr ‘upper air’, from the base of aithein ‘burn, shine’. Originally the word denoted a substance believed to occupy space beyond the sphere of the moon. ether (sense 3) arose in the mid 17th century and ether (sense 1) in the mid 18th century. noun: ether; noun: aether 1. CHEMISTRY a pleasant-smelling colorless volatile liquid that is highly flammable. It is used as an anesthetic and as a solvent or intermediate in industrial processes; any organic compound with a structure similar to ether, having an oxygen atom linking two alkyl or other organic groups plural noun: ethers "methyl t -butyl ether" 2. LITERARY
the clear sky; the upper regions of air beyond the clouds.
"nasty gases and smoke disperse into the ether"
INFORMAL
air regarded as a medium for radio.
noun: the ether
"choral evensong still wafts across the ether"
3.
ARCHAIC•PHYSICS
a very rarefied and highly elastic substance formerly believed to permeate all space, including the interstices between the particles of matter, and to be the medium whose vibrations constituted light and other electromagnetic radiation; late Middle English: from Old French, or via Latin from Greek aithēr ‘upper air’, from the base of atheism ‘burn, shine’. Originally the word denoted a substance believed to occupy space beyond the sphere of the moon. ether (sense 3) arose in the mid 17th century and ether (sense 1) in the mid 18th century. Ethers are a class of organic compounds that contain an ether group—an oxygen atom connected to two alkyl or aryl groups. They have the general formula R–O–R′, where R and R′ represent the alkyl or aryl groups. Wikipedia Formula: C4H10O
