Nihoner
係数
keisuu
also spelled keisu
coefficient, factor, proportional constant
All Senses
  1. keisuu coefficient, factor, proportional constant
How it's used

Used in math and science contexts, especially when talking about equations, formulas, or statistics.

この式の係数を求めなさい。
Kono shiki no keisuu o motome nasai.
Find the coefficient in this equation.

相関係数は0.8だった。
Soukan keisuu wa 0.8 datta.
The correlation coefficient was 0.8.

⚖️ Commonly confused with 定数 (constant), but 係数 is a multiplier of a variable, while 定数 is a fixed value.

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Kanji Breakdown
係
Person In Charge, Connection, Duty, Concern Oneself
On: けい Kun: かか.る,かかり,-がかり,かか.わる
9 strokes N3
数
Number, Strength, Fate, Law, Figures
On: すう,す,さく,そく,しゅ Kun: かず,かぞ.える,しばしば,せ.める,わずらわ.しい
13 strokes N3
How to Use This Word
Noun (名詞)
Pattern
係数は〜です。 / 〜の係数

💡 Use は or が to mark this word as the topic or subject of a sentence.

Example
この係数はとても大切です。
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Found in a wide range of contexts. Useful for building reading and listening fluency.

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Lv 1
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🔴 Hard

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