Definitions from Wiktionary ( )

▸ noun:  A proposed name for the common currency that the West African Monetary Zone plans to introduce in the framework of the Economic Community of West African States.
▸ adjective:  Clipping of ecological. Environmentally friendly or sensitive. [Relating to ecology, the interrelationships of organisms and their environment.]
▸ adjective:  Clipping of economy. Affording economical use, e.g. of an appliance. [Cheap to run; using minimal resources; representing good value for money; economical.]
▸ noun:  (US, astronautics) Abbreviation of engine cut-off or engine cutoff. (a NASA term for when rocket engines are shut down)
▸ noun:  (astronomy, physics) Initialism of eternally collapsing object. (a type of black hole replacement, to avoid having gravitational singularities) [A proposed alternative to a black hole whose collapse continually slows down, and that does not form an event horizon]

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