a.

1. 四倍的；四重的；四部組成的

n.

1. 四倍數

vt.

1. 使成四倍

vi.

1. 成為四倍

adj.

1. consisting of four parts or elements.
2. consisting of four times as much or as many.
3. (of time in music) having four beats in a bar.

v.

n.