Crown ether

ether, any of a class of organic compounds characterized by an oxygen atom bonded to two alkyl or aryl groups . Ethers are similar in structure to alcohols, and both ethers and alcohols are similar in structure to water.

Ethereum enables the deployment of smart contracts and decentralized applications (dApps) to be built and run without any downtime, fraud, control, or interference from a third party .

ether, also spelled aether, also called luminiferous ether, in physics, a theoretical universal substance believed during the 19th century to act as the medium for transmission of electromagnetic waves (e.g., light and X-rays), much as sound waves are transmitted by elastic media such as air.

Ether is a form of payment for network participants to execute their requested operations on the network . While ether can be thought of as the cryptocurrency of the Ethereum network, metaphorically speaking, it is more accurate to refer to it as the “fuel” of the network.