Definition of "Ether"

Ether¹

proper noun
1. (Roman mythology) The god-personification of the bright, glowing upper air of heaven. He is the Roman counterpart of Aether.

Ether²

noun
plural Ether
1. (cryptocurrencies) A unit of the Ethereum digital currency, ETH.
  Quotations
  After more than 30 bids, the auction ended at 12:32 p.m. Eastern time, with a winning bid of 350 Ether, or about $560,000.
  2021 March 26, Kevin Roose, “Why Did Someone Pay $560,000 for a Picture of My Column?”, in The New York Times‎

Ether³

proper noun
1. (Mormonism) The ancient American prophet of Mormon theology who wrote the Book of Ether in the Book of Mormon.