φθίσις

A. 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.

2. of the moon, waning, Arist. HA 582b2, GA 767a4.

II. of persons, atrophy, emaciation, Hp. Art. 1.

2. esp. consumption, Hdt. 7.88, Hp. Epid. 1.24, Aph. 5.11 (pl.), Arist. HA 518b21 (pl.), EN 1150b33, IG 42(1).122.69 (Epid., iv B. C.), cf. φθόη.

3. contraction of the pupil of the eye, Gal. 19.435, Aret. SD 1.7, Aët. 7.55.