telefonních
The term "telefonních" is the genitive plural form of the Czech word "telefonní," which translates to "telephone" or "telephonic." In the Czech language, case endings are used to indicate the grammatical function of a noun or adjective within a sentence. The genitive case often expresses possession, origin, or is used after certain prepositions. The plural form indicates more than one item. Therefore, "telefonních" would be used in contexts referring to multiple telephone-related items or concepts. For example, it might appear in phrases like "seznam telefonních čísel" (list of telephone numbers) or "údržba telefonních linek" (maintenance of telephone lines). Understanding the grammatical role of "telefonních" is crucial for comprehending Czech sentences where it appears, as its meaning is directly tied to the noun or pronoun it modifies or relates to through the genitive plural construction.