noun
final issue; last issue
Used for the last published issue of a magazine, journal, or other periodical before it ceases publication.
この雑誌の終刊号は来月発売されます。
The final issue of this magazine will be released next month.
創刊号 is the first issue of a publication, while 終刊号 is the last issue.
Compound of 終刊 (shūkan, 'ceasing publication') + 号 (gō, 'issue number').