doubler

Everyday

1. Something or someone that doubles an amount or size. tree →
2. (games and sport) A move or score that counts twice, or a player who scores twice. tree →
3. (horse racing, betting) A bet on two races where you only win if both win (usually called a «double»). tree →

In the lessons

Not a common word; used in maths puzzles for a machine or rule that doubles numbers, in board games and quizzes for bonus squares, and in technical talk for devices that double voltage or frequency; phrases: «score doubler», «a doubler question».

Examples

• In our function machine, the doubler turns 5 into 10. tree →
• The quiz had a doubler round where points counted twice. tree →
• Land on the doubler square and your coins double! tree →
• The engineer built a voltage doubler. tree →
• If you put 7 into the doubler, what comes out? tree →
• The doubler round helped our team win. tree →

Note

Countable. In maths: a doubler multiplies by 2, so 3 → 6, 12 → 24; doing it twice multiplies by 4. Rare word; usually say «double» or «times two».