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accidens

accĭdens, entis.

I. P. a. fr. accĭdo.
II. As subst. n.
A. The accidental, nonessential quality of any thing, τὸ συμβεβηκός (opp. substantia, the Greek οὐσία): causa, tempus, locus, occasio . . . rerum sunt accidentia, the accidental or extraneous circumstances, Quint. 5, 10, 23; so 3, 6, 36; 4, 2, 130: ex accidentibus (= epithetis), id. 8, 3, 70; hence, an adjective, Macr. S. 1, 4.
B. An accident or chance.
1. In gen., Dig. 35, 2, 51: per accidens, accidentally, Firm. Math. 5, 4.
2. In part., an unfortunate circumstance: accidentia (opp. prospera), Pseudo-Quint. Decl.

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