noun
luminous paint
Paint that emits visible light after absorbing energy, used for safety signs, watch dials, and decorative purposes.
非常口の標識には発光塗料が使われている。
Luminous paint is used for emergency exit signs.
Fluorescent paint, which glows only under UV light, unlike luminous paint that stores and re-emits light.
Compound of 発光 (はっこう, 'light emission') and 塗料 (とりょう, 'paint, coating material').