οὐσία
οὐσία
οὐσία, ἡ,
οὖσα, part. fem. of εἰμι
that which is oneʼs own, oneʼs substance, property, Hdt., Eur.
= τὸ εἶναι, being, existence, Plat.; τὰς ἄπαιδας οὐσίας her childless state, Soph.
the being, essence, nature of a thing, Plat., etc.