attrib.
1- consisting of four parts or elements四部分（组成）的, 四方面的：
a quadruple murder.
涉及四方的谋杀案。
1.1
- consisting of four times as much or as many as usual四倍的; 四重的：
a quadruple vodka.
一份四倍浓度的伏特加酒。
1.2
- (of time in music) having four beats in a bar（音乐节拍）四拍子的。
- increase or be increased fourfold（使）增长四倍：
no obj. oil prices quadrupled in the 1970s.20世纪70年代石油价格上涨了四倍。
- a quadruple thing, number, or amount四倍的东西（或数字、数量）。
派生词
quadruply
adverb词源
late Middle English (as a verb)： via French from Latin quadruplus, from quadru-'four'+-plus as in duplus （see DUPLE）.