冷却材(れいきゃくざい)

れいきゃくざい
noun
coolant; cooling medium
technicaltechnology
1. coolant; cooling medium
A substance, such as water or a special fluid, used to carry heat away and keep an engine, reactor, or machine from overheating.
冷却材(れいきゃくざい)を入(い)れる。
to add coolant.
原子炉(げんしろ)では水(みず)が冷却材(れいきゃくざい)として使(つか)われる。
In a nuclear reactor, water is used as a coolant.
冷却材(れいきゃくざい)が足(た)りないと、機械(きかい)はすぐに熱(あつ)くなってしまう。
If there isn't enough coolant, the machine quickly gets too hot.

Written 冷却(れいきゃく) (cooling) + 材(ざい) (material, agent). Common in engineering and nuclear contexts.

Similar words

  • 冷却水(れいきゃくすい): cooling water — specifically water used as a coolant
  • 不凍液(ふとうえき): antifreeze — a coolant that also lowers the freezing point

Related Words

Compare: 冷媒 (refrigerant)
general
Added 2026.6.23 18:30 · Revised 2026.9.2 13:02
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