term of industry

The familiar name for an obscure object, idea, category, etc. used by those who regularly work or interact with it, especially professionals.

"The term of industry for the flavor category that Dr. Pepper and Mr. Pibb fall into is 'spicy cherry.'"

"Why do computers make bizarre eletrical noises in TV and movies? Is there a term of industry for that?" "Oh yeah, they call that 'hyper-realistic' sound design."