gleichmäßigerem
Gleichmäßigerem is not a stand‑alone lexical item in German, but a particular inflected form of the adjective gleichmäßig in its comparative degree. The base meaning of gleichmäßig is “even, uniform, regular,” and the comparative form is gleichmäßiger, meaning “more even/ more uniform.” The ending -em attaches to form the dative singular masculine or neuter variant, yielding gleichmäßigerem.
In German attributive adjective declension, endings change with case, number, gender, and the presence or absence
Compared forms include gleichmäßiger (nominative masculine singular or other contexts with a different determiner) and other
Etymology traces gleichmäßig to a combination of gleich (equal) and m äßig (measured), yielding the sense of