DEFINITION of 'Regulation E'. A regulation set forth by the Federal Reserve. Regulation E outlines the rules and procedures for electronic funds transfers (EFTs) and outlines guidelines for those who sell and issue electronic debit cards. Rules pertaining to consumer liability for unauthorized card usage fall under this regulation as well. Next Up.
Essaim. Essaim is a French military reconnaissance microsatellite constellation. Its main purpose is to collect and map signals intelligence across the world. The DGA describes it as a vacuum cleaner for [radio] waves.
Prosaic means ordinary or dull. Most of us lead a prosaic everyday life, sometimes interrupted by some drama or crisis. This adjective is from Latin prosa prose, which is ordinary writing intended to communicate ideas and information. Prose is often contrasted with poetry, which usually has a more imaginative and original style.