Definitions from Wiktionary ( )

▸ noun:  (travel, aviation, reservation system) End transaction, end of transaction (with transaction meaning an amendment in the reservation system in this sense).
▸ verb:  (informal, dialectal) Pronunciation spelling of ate, the simple past and past participle of eat
▸ noun:  (uncountable) Initialism of Eastern Time (-5 hours to GMT). [Eastern Daylight/Eastern Standard Time]
▸ noun:  (countable) Abbreviation of extraterrestrial. [A being originating from outside of the Earth's atmosphere, from space, or from another planet; an alien.]
▸ noun:  (music, countable) Initialism of escape tone. [(music) a non-harmonic tone that is a second from a note in the previous chord and more than a second from a note in the next chord]
▸ noun:  (physics, uncountable) Initialism of electron tunneling.
▸ noun:  (medicine) Initialism of essential tremor. [(medicine, chiefly uncountable) A neurological condition that causes rhythmic shaking of unknown cause in one or more parts of the body during voluntary movements.]
▸ noun:  (medicine) Abbreviation of endotracheal or endotracheal tube.
▸ noun:  (travel, aviation) Initialism of electronic ticket.
▸ noun:  (sports, especially drag racing) Initialism of elapsed time. [(sports, especially drag racing) The duration of time that has passed between the commencement of the event and its completion, irrespective of any time-outs, half-time breaks, or other interruptions.]
▸ noun:  (organic chemistry) Abbreviation of ethyl. (-C₂H₅) [(organic chemistry) The univalent hydrocarbon radical, C₂H₅, formally derived from ethane by the loss of a hydrogen atom.]

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