Definition: ether

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Source: WordNet (r) 1.7 

ether
     n 1: a colorless volatile highly inflammable liquid used as an
          inhalation anesthetic [syn: ethoxyethane, divinyl
          ether, vinyl ether, diethel ether, ethyl ether]
     2: (archaic) the fifth and highest element after air and earth
        and fire and water; was believed to be the substance
        composing all heavenly bodies [syn: quintessence]
     3: a medium that was once supposed to fill all space and to
        support the propagation of electromagnetic waves [syn: aether]

Source: Webster's Revised Unabridged Dictionary (1913) 

Ether \E"ther\, n. [L. aether, Gr. ?, fr. ? to light up, kindle,
   burn, blaze; akin to Skr. idh, indh, and prob. to E. idle:
   cf. F. ['e]ther.] [Written also [ae]ther.]
   1. (Physics) A medium of great elasticity and extreme
      tenuity, supposed to pervade all space, the interior of
      solid bodies not excepted, and to be the medium of
      transmission of light and heat; hence often called
      luminiferous ether.

Source: The Free On-line Dictionary of Computing (2003-OCT-10) 

ETHER

   <language> A concurrent object-oriented language?

   (1997-03-18)

Source: Hitchcock's Bible Names Dictionary (late 1800's) 

Ether, talk