性 能(せいのう)

せいのう

noun

performance, capability

1. performance, capability

The ability or capacity of a machine, device, or system to perform its functions; technical specifications.

この車(くるま)は燃費(ねんぴ)性能(せいのう)が良(よ)い。

This car has good fuel efficiency.

燃費性能 = fuel economy performance

新(あたら)しいパソコンは性能(せいのう)が格段(かくだん)に上(あ)がった。

The new computer's performance has improved dramatically.

性能(せいのう)比較(ひかく)をしてから購入(こうにゅう)を決(き)めた。

I decided to purchase after comparing the specifications.

性能(せいのう) refers to the technical performance or capabilities of machines, devices, and systems. It's commonly used when discussing electronics, vehicles, and equipment.

COMMON COMPOUNDS:

高(こう)性能(せいのう): high-performance
性能(せいのう)比較(ひかく): performance comparison
性能(せいのう)評価(ひょうか): performance evaluation
燃費(ねんぴ)性能(せいのう): fuel efficiency

TYPES OF PERFORMANCE:

処理(しょり)性能(せいのう): processing performance
走行(そうこう)性能(せいのう): driving performance
耐久(たいきゅう)性能(せいのう): durability

SYNONYM:

スペック: specifications (loanword from 'spec')

general

Added 2026.1.14 7:31 · Revised 2026.5.31 6:10

04000/04340_seinou