Definition of sub-ether in English:

sub-ether

(also sub-aether)

noun

Science Fiction Physics
  • A hypothetical or imagined medium extending throughout space like the ‘ether’ but acting on a smaller scale or order of magnitude.

Origin

Early 20th century. From sub- + ether.

Pronunciation

sub-ether

/ˈsʌbˌiːθə/