roztoku

Roztoku is the genitive singular form of the Czech and Slovak noun roztok, which means a solution in chemistry. A roztok is a homogeneous liquid that contains dissolved substances in a solvent. The form roztoku is used when the noun is in the genitive case, typically in phrases that describe a property, component, or measurement of the solution, rather than the solution as a stand-alone entity. For example, you would say “koncentrace roztoku” (the concentration of the solution) or “pH roztoku” (the pH of the solution).

In both languages, roztoku appears in scientific and technical writing to express attributes of a solution, such as concentration, temperature, or pH. The use is grammatical rather than a distinct concept; roztoku functions as a case-inflected form of roztok that ties nouns and adjectives to the noun it modifies. Examples include “teplota roztoku,” “síla elektrolytu v roztoku,” and similar constructions.

Origin and usage notes: The base word roztok is native to Czech and Slovak, with roztoku serving as its genitive singular. The same inflection pattern is used in Slovak, so phrases like “koncentrácia roztoku” or “pH roztoku” are common in technical writing. The term roztoku is not a separate scientific term; it is a grammatical form used within the standard terminology for solutions. See also roztok for the base noun.