gyrobifastigium (English, noun)
expansion: gyrobifastigium (plural gyrobifastigia or gyrobifastigiums)
Senses:
glosses: A polyhedral solid formed by joining two face-regular triangular prisms along corresponding square faces, giving a quarter-turn to one prism. It is noted for being one of the few regular polyhedra that packs in three dimensions.
Forms:
form: gyrobifastigia
tags: plural
form: gyrobifastigiums
tags: plural