IPA: //sʌbˈkuːld//
KK: /sʌbˈkuːld/
Describing a liquid that is at a lower temperature than what is needed for it to boil at a specific pressure.
The subcooled liquid flowed smoothly through the pipes without vaporizing.
Subcooled → It is formed from "sub-" (meaning under or below) and "cooled" (from the verb "cool", meaning to lower the temperature). The word "subcooled" refers to a state where a substance is cooled below its normal boiling point without actually changing into a liquid.
Think of something being cooled 'under' its normal boiling point — 'sub-' means under, and 'cooled' refers to lowering the temperature.