不ふ凍とう

noun which may take the genitive case particle 'no', noun

ice-free; non-freezing; anti-freeze

Describes liquids, ports, or equipment that do not freeze or are protected against freezing. Often used in compound terms like 不凍液 (antifreeze liquid) or 不凍港 (ice-free port).

• 不ふ凍とう液えきを車くるまのラジエーターに入いれた。

  I put antifreeze into the car's radiator.

• この港みなとは冬ふゆでも不ふ凍とう港こうとして知しられている。

  This port is known as an ice-free port even in winter.