等とう差さ

noun

(equal) difference; common difference

Used in mathematics and formal contexts to refer to a constant difference between terms in an arithmetic progression or a graded scale. Not an everyday word for 'difference'.

• 等とう差さ数すう列れつでは、隣となり合あう項こうの差さは一いっ定ていで、これを等とう差さという。

  In an arithmetic progression, the difference between consecutive terms is constant; this is called the common difference.

• この数すう列れつの等とう差さは3です。

  The common difference of this sequence is 3.