pentad

名词 pentad:

1. the cardinal number that is the sum of four and one
   同义词：five, 5, V, cinque, quint, quintet, fivesome, quintuplet, fin, Phoebe, Little Phoebe

pen.tad

n.（名词）
A group of five.
五个一组

来源：
Greek pentas pentad- [group of five]
希腊语 pentas pentad- [五个一组]
from pente [five] * see penk we
源自 pente [五] *参见 penk we