Hmotnostní

Hmotnostní is a Czech adjective meaning mass-related or pertaining to mass. It is formed from the noun hmotnost (mass) or, less commonly, from hmota (matter) and uses the suffix -ní to create a descriptive word. The term is primarily employed in technical language, especially in physics and engineering, to name properties, quantities, or phenomena that depend on or involve mass.

In practice, hmotnostní is used to form compound terms describing mass-dependent concepts. Examples include hmotnostní hustota (mass density) and hmotnostní tok (mass flux). As an attributive adjective, hmotnostní agrees with the gender, number, and case of the noun it modifies, following the standard rules of Czech grammar.

The word is largely confined to technical or scientific discourse. In everyday Czech, more general expressions such as phrases involving the noun hmotnost or terms describing specific quantities are common, and the adjective hmotnostní may appear mainly in specialized texts, manuals, or academic writing.

In broader usage, hmotnostní signals a relationship to mass as a parameter in a model, measurement, or physical law. Its function is to label aspects of a system that are determined by or scale with mass, contrasting with properties tied to other quantities such as volume, energy, or charge.