εως (ἡ) [ῐσ]
      1 dépérissement, extinction, PD. fr. 74, 8 ; p. opp. à αὔξησις ou αὔξη, HPC. V. med. 10 ; PLAT. Phæd. 71 b, Rsp. 521 e ; au plur. PLAT. Phil. 42 d ; en parl. de la lune, disparition, déclin, ARSTT. H.A. 7, 2, 1, etc. ;
      2 particul. consomption, HPC. Art. 7, 80 ; d’où phtisie, HDT. 7, 88 ; HPC. Aph. 1247 ; PLUT. M. 1052 d ; ARSTT. H.A. 3, 11, 14, etc.

Étym. φθίω.

εως, ἡ, (< φθίω) : — wasting away, perishing, decay, καρποῦ Pi. Pae. 9.14; of the κόσμος, Ocell. 1.4; opp. αὔξησις, Hp. VM 6, Pl. Phd. 71b; opp. αὔξη, Id. R. 521e; pl., Id. Phlb. 42d. of the moon, waning, Arist. HA 582b2, GA 767a4. of persons, atrophy, emaciation, Hp. Art. 1. esp.
consumption, Hdt. 7.88, Hp. Epid. 1.24, Aph. 5.11 (pl.), Arist. HA 518b21 (pl.), EN 1150b33, IG4²(1).122.69 (Epid., iv BC), cf. φθόη.
contraction of the pupil of the eye, Gal. 19.435, Aret. SD 1.7, Aët. 7.55.

ἡ, Auszehrung, Abzehrung, Schwindsucht, Her. 7.88 ; übh. das Schwinden, Abnehmen, καρποῦ Pind. frg. 74 ; Ggstz αὐξησις, Plat. Phaed. 71b (wie Arist. gen. et interit. 1.1); σώματος αὔξις καὶ φθίσις Rep. VII.521c, wie Phil. 42d ; auch σελήνης, Ggstz πλήρωσις, Arist. H.A. 7.2.