This is the 2875th most frequent German word.
vollem
"Vollem" is the dative or accusative singular form of "voll," meaning "full" in English, typically used with masculine nouns (e.g. "with full energy").
'Vollem' is used in the dative case here to match 'Einsatz', demonstrating its adjectival agreement with the noun it describes.
Mit vollem Einsatz bewältigte sie die Herausforderung.
With full commitment, she overcame the challenge.
'Vollem' is used in conjunction with 'Licht', also in the dative case, describing the state of fullness or completeness related to light.
Der Raum war mit vollem Licht erfüllt.
The room was filled with full light.
Here, 'vollem' modifies 'Inhalt' in the dative case, showing the adjective's agreement with the gender, number, and case of the noun.