attrition

漸減、消耗

人が去ったり資源が使い尽くされたりして、数や力が徐々に減ること。

やさしい英語で： A gradual fall in numbers or strength as people leave or resources are used up.

• Staff attrition has increased this year.
• The team lost members through attrition.
• Years of fighting became a war of attrition.

類義語： gradual loss, depletion

よく使う表現： staff attrition, attrition rate, war of attrition

摩耗させる

こすったり削ったりして物をすり減らす。

やさしい英語で： To wear something down by rubbing or grinding it.

• Repeated contact can attrition the surface.
• The grinding process attritioned the rock into smaller particles.
• Constant rubbing had attritioned the edges of the sample.

類義語： wear down, abrade

よく使う表現： attrition the rock, attrition a surface, attrition the teeth

減少する

構成員が去ったり失われたりして、数が少なくなる。

やさしい英語で： To become smaller in number as members leave or are lost.

• The group began to attrition after the first month.
• The original cohort attritioned to forty participants.
• Student numbers had attritioned steadily throughout the course.

使い方： attrition to a number (The group attritioned to twenty members by December.)

類義語： dwindle, decrease

反対語： increase, grow

よく使う表現： attrition to something, attrition over time, attrition gradually