buzz·word

[buhz-wurd]
noun
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:
1965–70; buzz1 + word

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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Etymonline
Word Origin & History

buzzword
1946, from buzz + word. Noted as student slang for the key words in a lecture or reading.
Online Etymology Dictionary, © 2010 Douglas Harper
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00:10
Buzzword is always a great word to know.
So is bezoar. Does it mean:
a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.
the offspring of a zebra and a donkey.
Example sentences
Ecotourism is a buzzword that has recently been gaining momentum both
  nationally and internationally.
But cloud services vary between companies so much that the buzzword can get
  awfully confusing.
Translational medicine is indeed a big buzzword these days.
The buzzword of the day is disintermediation, a way of saying that anyone
  between the seller and the buyer is in big trouble.
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