pentacron
发音
US
词形变化
pentacra
复数
pentacra
释义与例句
n.
-
1.
A solid with five summits (vertices), such as a square pyramid
古体 数学
词源
From Ancient Greek πέντε (pénte, “five”) + ἄκρον (ákron, “summit”).
来源：wiktionary