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正多面体 (せいためんたい, seitamentai) Japanese meaning | Kotomora

正せい多た面めん体たい

せ

い

た

め

ん

た

い

Meanings

1

regular polyhedron

A polyhedron whose faces are congruent regular polygons and whose vertices are all alike. Used in geometry.

正せい多た面めん体たいは全ぜん部ぶで五ご種しゅ類るいしか

存そん

在ざい

し

ない

。

There are only five regular polyhedra in total.

Kanji

正correct, justice, righteous
多many, frequent, much
面mask, face, features
体body, substance, object

Related words

多た面めん体たい
多面体 is a general polyhedron, while 正多面体 specifically means a regular polyhedron with congruent regular faces.

Built from

正せい+多た面めん体たい

Etymology

Compound of 正 (regular) + 多面体 (polyhedron). The exact historical derivation is uncertain, but the term follows standard mathematical naming conventions.