paralelního

Paralelního is the genitive singular form of the Czech adjective paralelní, meaning parallel. In Czech, adjectives agree with the nouns they modify in gender, number, and case; thus paralelní has inflected forms such as paralelního. This form is used to attribute a property to or describe something in a parallel relation, for example paralelního prostoru (of a parallel space) or paralelního světla (of parallel light).

Etymology: paralelní derives from the concept of parallelism, itself from Greek parallēlos and Latin parallelus. The term entered Czech scientific and mathematical vocabulary in the 18th–19th centuries, reflecting ideas of lines, planes, and processes running alongside each other.

Usage: In mathematics and geometry, paralelní describes lines or planes that do not intersect. In science and engineering, it appears in phrases such as paralelní zpracování (parallel processing) and paralelní obvody (parallel circuits). In literature or everyday speech, it can form compounds like paralelního světa (a parallel world) or paralelního parkování (parallel parking), where the genitive form modifies the noun.

Grammatical note: paralelního is specifically the genitive singular form of the adjective; other cases and genders require different inflected forms. The base adjective paralelní is used across contexts to denote things that run side by side, following standard Czech declension patterns.