出典:Wikipedia
出典:『Wikipedia』 (2011/06/21 09:39 UTC 版)
A diptych ( /ˈdɪptɪk/; from the Greek δίπτυχον, di "two" + ptychē "fold") is any object with two flat plates attached at a hinge. Devices of this form were quite popular in the ancient world, wax tablets being coated with wax on inner faces, for recording notes and for measuring time and direction. The term is also used figuratively for a thematically-linked sequence of two books.