# Cylindrone (EntityTopic, 11)

### From Hi.gher. Space

The **cylindrone** is a special case of the pyramid where the base is a cylinder. It has a single vertex, and is bounded by two cones, a cylinder, and an inverted arrinder. Its vertex-first projection into 3D is a cylinder containing two cones that meet at the central vertex.

Notable Tetrashapes
| |

Regular:
| pyrochoron • aerochoron • geochoron • xylochoron • hydrochoron • cosmochoron |

Powertopes:
| triangular octagoltriate • square octagoltriate • hexagonal octagoltriate • octagonal octagoltriate |

Circular:
| glome • cubinder • duocylinder • spherinder • sphone • dicone • coninder |

Torii:
| tiger • torisphere • spheritorus • torinder • ditorus |

17. 3^{1}Sphone | 18. [21]
^{1}Cylindrone | 19. [111]^{1}Cubic pyramid |

List of tapertopes |