To decide or determine something formally; to make a final arrangement or conclusion.
会議で次回の開催日が決定した。
At the meeting, the date for the next session was decided.
公式に決定され次第、皆さんに連絡します。
We will notify everyone once it has been officially decided.
この案はまだ最終決定ではない。
This proposal is not yet the final decision.