角錐(かくすい)

かくすい
noun
pyramid (geometric)
1. pyramid (geometric solid)
A pyramid in the geometric sense — a solid with a polygonal base and triangular faces meeting at a single point. Used for the abstract shape; the Egyptian monument is called ピラミッド.
四角錐(しかくすい)を描(か)く。
Draw a square pyramid.
角錐(かくすい)の体積(たいせき)を求(もと)める。
Find the volume of a pyramid.
底面(ていめん)が三角形(さんかっけい)の角錐(かくすい)を三角錐(さんかくすい)と呼(よ)ぶ。
A pyramid whose base is a triangle is called a triangular pyramid (tetrahedron).

Compound of 角(かく) (corner; angle) + 錐(すい) (a tapering/awl-like shape). Used almost only in math class and technical contexts.

COMMON COMPOUNDS:

  • 三角錐(さんかくすい): triangular pyramid (tetrahedron)
  • 四角錐(しかくすい): square pyramid
  • 六角錐(ろっかくすい): hexagonal pyramid

SIMILAR WORDS:

  • 円錐(えんすい): cone — circular base instead of polygonal
  • 角柱(かくちゅう): prism — two parallel polygonal faces instead of a point at the top
  • ピラミッド: pyramid (Egyptian monument; loanword)
general
Added 2026.6.7 11:04
28500/28896_kakusui