Quasi-

[приставка, первая часть сложных слов, латинский язык] квази-; полу- Например: quasi-contract — квазиконтракт quasimolecule — квазимолекула

Большой англо-русский словарь

Quasi-

combining form Etymology: Latin quasi as if, as it were, approximately, from quam as + si if — more at quantity, so 1. in some sense or degree Example: quasiperiodic Example: quasi-judicial 2. resembling in some degree Example: quasiparticle

Merriam-Webster's Collegiate Dictionary