quadruple /kwodˈrə-pl or (esp Scot) -rooˈ/

1. Fourfold
2. Having four parts, members or divisions

1. Four times as much
2. A coin worth four pistoles (historical)

1. To increase fourfold, multiply by four
2. To equal four times

To become four times as much

quadˈruplet (or /-rooˈ/) noun

1. Any combination of four things
2. One of four (children or animals) born at one birth (informal short form quad)
3. A group of four notes performed in the time of three (music)
4. A cycle for four riders

quadˈruply /-pli or -rooˈpli/ adverb

In a fourfold manner

Quadruple Alliance noun

A league formed in 1718 by Britain, France, Austria and Holland against Spain, or one formed in 1813 by Britain, Prussia, Austria and Russia against Napoleon

quadruple time noun (music)

A time with four beats to the bar

• catarrhous
• catarrhs
• catasta
• catastas
• catastases
• catastasis
• catastrophe
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• catastrophe theory
• catastrophic
• catastrophically
• catastrophism
• catastrophisms
• catastrophist
• catastrophists
• catatonia
• catatonias
• catatonic
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• catawba
• catawbas
• Catayan
• catbird
• catbirds
• catboat