neologism

1. N-COUNT A neologism is a new word or expression in a language, or a new meaning for an existing word or expression. (語言的)新詞滙或新表意法; 舊詞新意[技術]

The newspaper used the neologism "dinks," Double Income No Kids. 這份報紙使用了新詞滙"dinks"—雙收入無小孩的家庭。