Full record for subetherics n.

OED requirements	any evidence 1948
Earliest cite	George O. Smith, "The Trans-Galactic Twins"
Comment	Fred Galvin submitted a 1952 cite from Isaac Asimov's "Youth". Fred Galvin submitted a 1948 cite from George O. Smith's "The Trans-Galactic Twins"
Last modified	24 August, 2009

Citations for subetherics n.

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1948 G.O. Smith Trans-Galactic Twins in Thrilling Wonder Stories June 18/2	If I remain on Trenda, I may learn the answer to the atomic engines and sub-etherics.
1948 G.O. Smith Trans-Galactic Twins in Thrilling Wonder Stories June 27/2	But then any insistence he made as to the science of sub-etherics and the functions thereof would be immediately discounted as the ravings of a sick mind.
1952 I. Asimov Youth in Space Sci. Fiction May 76/2	In a case such as theirs, then, there was little or no chance that another ship would come within range of their subetherics except for the most improbable of coincidences.