denního

Denního is a grammatical form used in the Czech language. It is the genitive singular form of the adjective denní, which means daily, everyday, or relating to daytime. The adjective denní itself comes from den (day) and the standard adjectival suffix -ní. In Czech, adjectives agree with the nouns they modify in gender, number, and case, so the ending denního appears when the noun is masculine or neuter in the genitive singular. Feminine forms follow the usual declension rules for adjectives.

Denního is frequently encountered when describing daylight, daily phenomena, or daytime operations. Common examples include phrases such as nedostatek denního světla (a lack of daylight) and denního provozu ( daytime operation). In nominative constructions, the base form denní is used, for example denní světlo (daylight). In other cases and with other nouns, the appropriate genitive, dative, or other forms of the adjective are used according to standard Czech grammar.

The term is not a standalone noun; it is a grammatical inflection of the adjective denní. Its usage spans fields such as meteorology, architecture, ergonomics, and everyday speech, wherever a relation to the day or to daylight needs to be specified.

In summary, denního serves as the genitive singular form of the Czech adjective denní, signaling a relationship to the day or to daylight, and appears in many common expressions describing daytime aspects.