noun
secondary substantive
Linguistics term for an inflectable word or phrase that functions as an uninflectable element within a sentence, such as a nominalized clause.
日本語文法では、用言に「の」や「こと」を付けて準体言を作ることができる。
In Japanese grammar, you can form a secondary substantive by attaching 'no' or 'koto' to an inflectable word.
Compound of 準 (jun, 'quasi-') + 体言 (taigen, 'uninflected word'). A technical term from Japanese grammar.