Zdrojovém
Zdrojovém is the locative singular form of the Czech noun zdroj, meaning source or origin. It appears most often with prepositions such as v or o to mark location or topic, for example: v zdrojovém kódu (in the source code), o zdrojovém textu (about the source text).
The noun zdroj is masculine inanimate. Its singular forms include nominative zdroj, genitive zdroje, dative zdroji,
In usage, zdroj can denote the origin of something: a water source, an information source, a data
Etymology: zdroj is an old Czech word for a spring or fountain, extended metaphorically to any origin