flexagon(redirected from Tetraflexagon)
A folded paper construction that can be flexed along its folds to reveal and conceal its faces alternately.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
a flat model consisting of a single pliable strip of paper which can be folded and flexed in various ways to expose different hidden faces
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014