Past participle of the verb "arrange" frequently used adjectivally.
Translations
The event was well arranged and everyone enjoyed it.
Мероприятие было хорошо организовано, и всем оно понравилось.
The books on the shelf were neatly arranged.
Книги на полке были аккуратно упорядочены.
Definitions
Organized, set out, or placed in a particular order or design. The flowers were beautifully arranged in a crystal vase.
Planned or agreed upon beforehand; pre-planned. They met at an arranged time to discuss the proposal.