Pyramidal (adjective)

Shaped like a pyramid.

Origin:

Late 16th century; earliest use found in george petie (d. 1591), mathematician. from classical latin pyramidalis, from pyramidem (genitive pyramīdis) pyramid.

Examples:

1. The shape of the ancient Egyptian pyramids is pyramidal.
2. The pyramidal structure of a bee's nest.
3. The pyramidal form of a mountain peak.
4. The pyramidal muscles of the back.
5. The pyramidal flowers in the botanical garden.