prenexního
Prenexního is a term that appears to be a grammatical form of the Czech word "prenosný," which translates to "portable" or "transferable" in English. In Czech grammar, the ending "-ního" typically indicates the genitive or dative singular masculine/neuter adjective form. Therefore, "prenexního" would likely be used in a sentence where "portable" or "transferable" modifies a masculine or neuter noun in the genitive or dative case.
For example, if one were discussing the "purpose of a portable device," in Czech, this might involve