English
skywave
From sky + wave.
Proto-Germanic *skiwô ‘cloud cover, haze’
Proto-Germanic *skiwją ‘cloud; sky’
Old Norse ský ‘cloud; (plural) sky’
Middle English sky ‘sky; cloud’
English sky
Proto-Indo-European *webʰ- ‘to weave, braid’
Proto-Germanic *wabōną
Proto-West Germanic *wabōn
Old English wafian ‘to wave’
Middle English waven ‘to shake’
English wave
Today it means
noun An electromagnetic wave refracted back to the Earth by the ionosphere.
Language periods are conventional ranges, not dates for this word.
Etymograph / skywave