This is the 6954th most frequent Russian word.
апелляционный
"Апелляционный" means "appellate" or "related to an appeal."
Used as an adjective describing the court's type, related to appeals.
Апелляционный суд рассматривает дело.
The appellate court is reviewing the case.
Here, it describes the institution that handles appeals.
Юристы подали заявление в апелляционный орган.
The lawyers submitted the application to the appellate body.
Describes the decision being related to the process of appeal.