tangram

UK: /ˈtæŋɡræm/ US: (tang′grəm)

WordReference Random House Unabridged Dictionary of American English © 2025

tan•gram  (tang′grəm), n. 

1. a Chinese puzzle consisting of a square cut into five triangles, a square, and a rhomboid, which can be combined so as to form a great variety of other figures.

• Chinese Táng Tang, i.e., Chinese + -gram
• tang-, perh. 1860–65

Collins Concise English Dictionary © HarperCollins Publishers::

tangram / ˈtæŋɡræm/ noun

1. a Chinese puzzle in which a square, cut into a parallelogram, a square, and five triangles, is formed into figures

Etymology: 19th Century: perhaps from Chinese t'ang Chinese + -gram