夜や光こう塗と料りょう

noun

luminous paint

Paint that glows in the dark after being exposed to light. Used for safety signs, watch dials, and decorative purposes.

• この時計とけいの文も字じ盤ばんには夜や光こう塗と料りょうが使つかわれている。

  Luminous paint is used on the dial of this watch.

• 非ひ常じょう口ぐちの標ひょう識しきに夜や光こう塗と料りょうを塗ぬっておくと、停てい電でん時じでも見みやすい。

  If you apply luminous paint to emergency exit signs, they are easy to see even during a power outage.