pyramidion: Meaning and Definition of

pyr•a•mid•i•on

Pronunciation: (pir"u-mid'ē-un, -on"), [key]
— pl. -mid•i•a
  1. a miniature pyramid, as at the apex of an obelisk.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.