coolant.

A substance circulated or applied to remove heat from machinery or another system.

Use it for

Words that belong together

• coolant leak
• coolant line

On the page

Coolant pooled beneath the ruptured line.

The pump stopped circulating coolant through the core.

Usage notes

Primary category: sci-fi. Forms: Usually uncountable; coolants for different substances. Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings.