> as lemmas

tetraptych n. , , , rare a folding picture or the like in four compartments; cf. triptych n. [Compare post-classical Latin tetraptychon , apparently denoting a writing tablet with four leaves (1659 or earlier), tetraptychus having four folds or leaves (1784 or earlier), ancient Greek τετράπτυχος fourfold; compare also diptych n., triptych n.]