Definition - A fashionable word that is used to impress rather than inform.

Example -
"The people at RealtyGuys have invented a new Real Estate paradigm."

Oxford English Dictionary -
Its first citation is from 1946:
"Students at the Graduate School of Business Administration at Harvard University use a specialized vocabulary known as ‘buzz words’ to describe the key to any particular course or situation."
(Amer. Speech XXI. 263/1)

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