σχίςις

A. cleavage, parting, Pl. Phd. 97a, 101c; of roads, ib.108a; of the wings of birds (cf. σχιζόπτερος), Arist. HA 532a26; of the feet of animals (cf. σχιζόπους), Id. PA 663a31; of a plant, Dsc. 4.187; of rivers, Plu. 2.93f; κατὰ τὴν σχίσιν at the cleavage (of the gullet into oesophagus and trachea), cj. for κατὰ σχέσιν (v.l. κατάσχεσιν) in Archig. ap. Orib. 8.1.18; ἀδένες . . σχίσεις ἀγγείων στηρίζοντες Gal. 6.674, cf. 15.532.

2. curdling, τοῦ γάλακτος (v. σχίζω 1.3) Id. 6.694, Philum. ap. Orib. 45.29.10.