Actually I've known one or two diptychs.dip·tych (dptk)
n.
1. A work consisting of two painted or carved panels that are hinged together.
2. An ancient writing tablet having two leaves hinged together.
3. A list of names, originally contained on such a tablet, of living and dead Christians for whom special prayers are made during the liturgy in many eastern and western churches.
[Late Latin diptycha, from Greek diptukha, from neuter pl. of diptukhos, folded double : di-, two; see di-1 + ptukh, fold (from ptussein, ptukh-, to fold).]
The American Heritage® Dictionary of the English Language, Fourth Edition copyright ©2000 by Houghton Mifflin Company. Updated in 2003. Published by Houghton Mifflin Company. All rights reserved.
ThesaurusLegend: Synonyms Related Words AntonymsNoun 1. diptych - a painting or carving (especially an altarpiece) on two panels (usually hinged like a book)
art, fine art - the products of human creativity; works of art collectively; "an art exhibition"; "a fine collection of art"
mark shame-on-me Bailey