noun, noun or participle which takes 'suru'
cancellation of a lecture or class
Used in academic contexts when a scheduled lecture or class is called off, often by the instructor or institution.
明日の講義は先生の都合で欠講になりました。
Tomorrow's lecture has been canceled due to the teacher's circumstances.
欠講が続くと、
If cancellations continue, the exam coverage may become narrower.