1. past tense and past participle of treble; multiplied by three

1. having been multiplied by three; made three times as much or as many

Examples

• The company’s profits trebled last year.
• Sales have trebled since the new marketing campaign began.
• The population of the town trebled over two decades.
• Her salary trebled when she got the promotion.
• The trebled investment returned significant dividends.
• Housing prices trebled in the downtown area.
• The trebled recipe served enough food for the entire party.