tangram definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
a Chinese puzzle made by cutting a square into five triangles, a square, and a rhomboid, and using these pieces to form various figures and designs
Origin: probably arbitrary coinage on analogy of anagram
tangram definition by American Heritage Dictionary
A Chinese puzzle consisting of a square cut into five triangles, a square, and a rhomboid, to be reassembled into different figures.
Origin: Perhaps partial translation of Chinese (Mandarin) táng tú : táng, Tang (Chinese dynasty) + tú, picture, diagram.