New word; new shape

I came across a new word just now (new to me), which is hebesphenomegacorona, which is “[a]n irregular solid figure with 21 faces, 18 of them triangular and the other three square” (from World Wide Words).

  1. Source: Hebesphenomegacorona — from MathWorld–A Wolfram Web Resource by Eric W. Weisstein at Wolfram Research.
  2. Source: Hebesphenomegacorona by Michael Quinion at World Wide Words on March 26, 2005.
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