final authority; ultimate authority
Refers to the highest decision-making power in an organization or process, often used in business, legal, or administrative contexts.
The final authority on this project rests with the department head.
The court holds the ultimate authority.
決定権 means 'decision-making authority' in general, while 最終権限 specifically emphasizes the final, unappealable authority.
権限 is a broader term for 'authority' or 'competence', whereas 最終権限 narrows it to the ultimate level.
Compound of 最終 (final, last) and 権限 (authority, power). The exact historical derivation is uncertain, but the meaning is transparent from its components.