相そう加か効こう果か

noun

additive effect

Technical term used in pharmacology, statistics, and other scientific fields to describe a combined effect equal to the sum of individual effects.

• この二ふたつの薬くすりには相そう加か効こう果かが認みとめられた。

  An additive effect was observed between these two drugs.

• 相そう加か効こう果かと相そう乗じょう効こう果かの違ちがいを説せつ明めいしてください。

  Please explain the difference between additive effect and synergistic effect.