ETabbr.1. Eastern Time2. elapsed time3. extraterrestrialAmerican Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.et the internet domain name for (Computer Science) Ethiopia Et the chemical symbol for (Chemistry) ethyl ET abbreviation for 1. (Education) Employment Training: a government scheme offering training in technological and business skills to unemployed people 2. Egypt (international car registration) Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014-et a noun suffix occurring orig. in loanwords from French or Italian, typically diminutives or nouns denoting an example or instance of something, or a group or member of a group having a specified number ( bullet; hatchet; islet; turret; doublet; quartet); of limited productivity in English ( baronet; octet; quintuplet; swimmeret), sometimes as a variant of -let before stems ending in syllabic l ( eaglet; owlet).Compare -ette. [Middle English