Nesteelliset

Nesteelliset is a Finnish term used to describe substances that are in the liquid phase. The word combines neste, meaning liquid, with the suffix -ellinen, forming an adjective that is used to describe liquids or liquid-like substances. In practice, nesteelliset is often used with a noun, for example nesteelliset aineet meaning liquid substances, and it helps distinguish liquids from kiinteät aineet (solids) and kaasut (gases).

In physics and chemistry, liquids are characterized by a definite volume but by shape that adapts to the container. They are relatively incompressible compared to gases and flow readily due to viscosity, a measure of internal resistance to deformation. Surface tension describes the cohesive forces at the interface between a liquid and another phase, such as air. Liquids can mix to form solutions, or separate into immiscible layers as emulsions or suspensions in different contexts.

The term is used across scientific, industrial, and educational settings to group substances by state of matter, particularly when discussing processes that involve phase changes, heat transfer, or fluid dynamics. Examples of nesteelliset substances include water, most organic solvents, oils, and alcohols, as well as molten metals at elevated temperatures.

Notes: Nesteelliset is a Finnish linguistic form rather than a separate technical category in English; in English-language texts the corresponding concept is simply “liquids” or “liquid substances.” The term emphasizes the liquid state as a distinct phase in material classification.