εὔθυνσις
From LSJ
ὁ χρόνος ἐστὶ δάνος, τὸ ζῆν πικρός ἐσθ' ὁ δανίσας → time is a loan, and he who lent you life is a hard creditor | time is on loan and life's lender is a prick
English (LSJ)
εως, ἡ, (εὐθύνω)
A straightening, opp. κάμψις, Arist. Mete.386a7, IA708b24; τῆς ῥινός Gal.18(1).481.
German (Pape)
[Seite 1071] ἡ, das Gerademachen, Lenken, Richten, Sp. die gerade Richtung; Ggstz κάμψις, Arist. Meteor. 4, 9.
Greek (Liddell-Scott)
εὔθυνσις: -εως, ἡ, (εὐθύνω) τὸ εὐθύνειν, ποεῖν τι εὐθύ, ἐν ἀντιθέσει πρὸς τὸ κάμψις, Ἀριστ. Μετεωρ. 4. 9, 8, π. Πορείας Ζῴων 9. 1· εὔθυνσις τῆς διεστραμμένης ῥινός, «ἴσασμα», Γαλην. τ. 18, μέρ. 1, σ. 481, 8.