watt

watt — noun

1. a standard unit for measuring how much electrical power a device uses or produce

1.名詞B1
釋義

a standard unit for measuring how much electrical power a device uses or produces — for example, a 60-watt light bulb uses 60 watts of power.

例句

The old 60-watt bulb used more power than the new 10-watt LED one.

modifier form: 60-watt / 10-watt

David checked the watt rating on the microwave before plugging it in.

collocation: watt rating

文法句型

number + watt + noun

number + watts + of + noun phrase

用法筆記

Often used as a compound modifier before a noun describing an electrical device (e.g., a 60-watt bulb). In this position the unit stays singular and is joined by a hyphen. After a number, 'watt' can be singular or plural depending on the number (1 watt, 60 watts).

常見錯誤

❌I need a 60-watts light bulb.
✅I need a 60-watt light bulb.
💡When used as a modifier before a noun, the unit stays singular.