A coined expression is a phrase that is very popular or one that is used often. A coined expression can also be a new phrase or an existing phrase or word that is used in a new sense.
Who coined the phrase, One in a million””
"Coined" typically refers to the act of creating or inventing a new word or phrase. It can also mean the process of officially issuing a new currency.
john smith
Boom Goes the Dynamite was a phrase coined by Brian Collins. He said during an NBA basketball game between Indiana and New Jersey which he was covering as a sportscaster.
Nam June Paik coined the phrase "Information Highway" in 1974. :)
Bill Engvall is the comedian who coined the phrase, "Here's your sign".
A newly coined word or phrase is called a neologism.
Neologism
the New York Times article that covered our launch coined the phrase social shopping," says Curatemedia CEO Scott Morrow
Me
Socrates