Opening and shutting; the act or state of opening and closing (e.g., doors, lids, switches).
窓の開閉はこまめに行ってください。
Please open and close the windows as needed (regularly).
この自動ドアは開閉がスムーズだ。
This automatic door opens and closes smoothly.
開閉ボタンは入口の右側にあります。
The open/close button is on the right side of the entrance.