QUADRUPLE
Quad"ru*ple, v. i.
Defn: To be multiplied by four; to increase fourfold; to become four times as much.
QUADRUPLET
Quad"ru*plet, n. [From Quadruple.]
1. A collection or combination of four of a kind.
2. pl. Four children born in the same labor.
3. A cycle for carrying four riders, so arranged that all the reders can assist in the propulsion.
QUADRUPLEX
Quad"ru*plex, a. Etym: [L., from quattuor four + plicare to fold.]
Defn: Fourfold; folded or doubled twice. Quadruplex system (Electric Telegraph), a system by which four messages, two in each direction, may be sent simultaneously over the wire.
QUADRUPLICATE
Quad*ru"pli*cate, v. t. [imp. & p. p. Quadruplicated; p. pr. & vb. n.
Quadruplicating.] Etym: [L. quadruplicatus, p. p. of quadruplicare,
fr. quadrupleQuadruplex.]
Defn: To make fourfold; to double twice; to quadruple.