πέψις
εως, ιος, ἡ
A.
softening, ripening, or changing by means of heat (Arist. Mete. 379b18, GA 775a17, Pr. 907a18):
I.
of fruit, πέπανσίς ἐστιπ. τις Id. Mete. 380a11, cf. Thphr. HP 1.12.2,5.1.3(pl.).
II.
cooking of food, including both ἕψησις and ὄπτησις (cooking by water or by dry heat), Arist. Mete. 380b13, 381a23; κλίβανος καιόμενος εἰς π. LXX Ho. 7.4.
b.
largess of cooked food, IGRom. 4.1637 (Philadelphia).
2.
of wine, fermentation, Plu. 2.656a.
III.
Medic., digestion of food, ὁμοία ἑψήσει Arist. Mete. 381b7, cf. PA 650a4, al.; τὰ τῆς π. ὄργανα Gal. Nat.Fac. 1.10; π. καὶ ἀνάδοσις Porph. Abst. 1.45: pl., Agatharch. 77.
2.
ripening, 'concoction' of acrid humours, Hp. VM 18, cf. Plu. 2.102a.
b.
concoction, as a function of the animal organs, ἡ τοῦ σπέρματος π. Arist. GA 719b2; ἡ διάκρισις π. ἐστί ib.775a17; of milk, ib.776b35.