noun
delayed effect; delayed action
Used for effects that appear after a delay, such as medication, policy, or mechanical action. Often contrasted with 速効 (immediate effect).
See also: 速効
この薬は遅効性なので、すぐには効きません。
This medicine is slow-acting, so it won't take effect right away.
遅効性の肥料を使うと、長く効果が続く
Using slow-release fertilizer keeps the effect lasting longer.