noun
book launch party; publication party
A party held to celebrate the publication of a new book.
来週、彼の新作の出版記念パーティーが開かれる。
A launch party for his new book will be held next week.
Compound of 出版 (shuppan, 'publication') + 記念 (kinen, 'commemoration') + パーティー (pātī, from English 'party').