a word or phrase, often sounding authoritative or technical, that is a vogue term in a particular profession, field of study, popular culture, etc.
Origin of buzzword
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
informal a word, often originating in a particular jargon, that becomes a vogue word in the community as a whole or among a particular group
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Online Etymology Dictionary, © 2010 Douglas Harper