TRIPTYCH
triptych
(noun) art consisting of a painting or carving (especially an altarpiece) on three panels (usually hinged together)
Source: WordNet® 3.1
Etymology
Noun
triptych (plural triptyches)
(arts) A picture or series of pictures painted on three tablets connected by hinges.
(philately) A set of three se-tenant postage stamps that form a composite picture.
Hypernyms
• (arts): polyptych
Source: Wiktionary
Trip"tych, n. Etym: [Gr. Tri-) +
Definition: Anything in three parts or leaves. Specifically: --
(a) A writing tablet in three parts, two of which fold over on the
middle part.
(b) A picture or altarpiece in three compartments.
Source: Webster’s Unabridged Dictionary 1913 Edition