Liquified

Liquified is the past participle of liquify, used as an adjective or verb to describe a substance that has been transformed into a liquid. The change may result from heating a solid until it melts or cooling and/or compressing a gas until it becomes a liquid. Liquified materials have the properties of a liquid, such as flowing and taking the shape of their container.

Liquefaction refers to the process of turning substances into liquids. For gases, liquefaction commonly involves cooling and sometimes high pressure. Notable examples include liquefied natural gas (LNG) and liquefied petroleum gas (LPG). For solids, liquefaction occurs at a substance’s melting point, where a solid becomes a liquid, such as ice melting to water.

In geology, soil liquefaction describes a dramatic loss of strength and stiffness in saturated soils during strong earthquakes, causing them to behave like a liquid temporarily. This phenomenon can lead to ground failures, differential settlement, and damage to structures as foundations and supports respond to the transient fluid-like motion.

In industry and energy sectors, the term liquified is standard in product naming and specifications for the storage and transport of gases under low temperature or high pressure. Liquified gases require specialized containment, handling procedures, and safety measures to manage risks such as rapid vaporization, pressure buildup, and cold burns.

See also liquefaction, liquify, phase transition.