triskaidekahedron

plural triskaidekahedrons

1. alternativeAlternative spelling of triskaidecahedron.

   The clock room was in the shape of a perfect triskaidekahedron, a thirteen-sided figure.

   1977, R. A. Lafferty, Apocalypses

   2 more examples

   Many plant cells, for example, are shaped like triskaidekahedrons; that is, they are roughly round but have 13 flat sides.

   1989, Modern Biology, Holt, Rinehart and Winston, →ISBN, page 65

   No doubt you are now acquiring the concept of a regular triskaidekahedron, or plane figure with thirteen equal sides, because I have just used the word.

   2013, D.L.C. Maclachlan, The Enigma of Perception, McGill-Queen’s University Press, →ISBN, page 55