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出典:Wiktionary
出典:『Wiktionary』 (2026/03/29 03:04 UTC 版)
From Latin runcina + -ation.
runcination (usually uncountable, plural runcinations)
出典:Wikipedia
出典:『Wikipedia』 (2011/04/09 03:22 UTC 版)
In geometry, runcination is an operation that cuts a regular polytope (or honeycomb) simultaneously along the faces, edges and vertices, creating new facets in place of the original face, edge, and vertex centers.
Runcination