Definition of jargon noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˈdʒɑːɡən//
; NAmE NAmE//ˈdʒɑːrɡən//
[uncountable] (often disapproving)
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words or expressions that are used by a particular profession or group of people, and are difficult for others to understand medical/legal/computer, etc. jargon Try to avoid using too much technical jargon. Word Originlate Middle English (originally in the sense ‘twittering, chattering’, later ‘gibberish’): from Old French jargoun, of unknown origin. The main sense dates from the mid 17th cent.Extra examples He always speaks in obscure legal jargon. Her emails are always couched in jargon. The report seemed to be written in computer jargon.
See the Oxford Advanced American Dictionary entry: jargon