不ふ凍とう剤ざい

noun

antifreeze; antifreezing agent

Technical term for a substance added to a liquid to lower its freezing point, used in engines, cooling systems, etc.

• 冬ふゆは車くるまのラジエーターに不ふ凍とう剤ざいを入いれる必ひつ要ようがある。

  In winter, you need to put antifreeze in the car's radiator.