πτύξ,ἡ(nom. only Gramm., Hdn.Gr. 1.396 , Hsch. ), dat.
A.
πτῠχί
Il. 20.22
: pl.πτύχες, πτύχας, 7.247 , al., Hes. Sc. 143 , etc.: after Hom.
πτῠχή,ῆς, which prevails in Pi. (v. infr. 11 ) and Trag.; the metre requires acc. sg.πτύχαin E. Supp. 979 (lyr.), but acc. pl.πτυχάςin S. Fr. 144 ; in other places eitherπτύχαςorπτυχάςwill suit the metre:—poet. word,layer, plate, mostly in pl.,σάκεος πτύχες platesof metal or leather, in strong shields, Il. 18.481 , cf. 7.247 , 20.269 , Hes. Sc. 143 .
2. fold(i.e.folded piece) of a garment, in pl., first in h.Cer. 176 , then in S. Fr. 494 , E. Supp. 979 (lyr.); of the entrails,κατὰ σπλάγχνων πτυχάςib. 212 ; εἰς τὰς πτυχάς
Arist. HA 549a17
;coatsof the stomach, Gal. 2.556 ;layersof muscles, Id. 18(2).944 .
3. writingtablets, ἐν πτυχαῖς βίβλων κατεσφραγισμένα
A. Supp. 947
; γραμμάτων πτυχὰς ἔχων