neologism; newly coined word
Refers to a word or expression that has been recently created or introduced into a language.
「スマホ」は比較的新しい新造語です。
'Sumaho' (smartphone) is a relatively new neologism.
この辞書には多くの新造語が収録されている。
This dictionary includes many newly coined words.
Compound of 新 (new) + 造 (make, create) + 語 (word). The term is a straightforward kanji compound meaning 'newly made word'.