cancellation of lecture or class
先生の体調不良で今日は欠講になった。
Today's class was cancelled because the professor felt unwell.
欠講の知らせが掲示板に貼ってあった。
A notice of class cancellation was posted on the bulletin board.
台風の影響で欠講が相次いだ。
Class cancellations continued one after another due to the typhoon.