special exhibition; themed exhibition; temporary exhibition
Refers to a curated exhibition, often at a museum or gallery, that is organized around a specific theme or for a limited time, as opposed to a permanent collection.
美術館でゴッホの企画展が開かれている。
A special exhibition of Van Gogh is being held at the art museum.
A dinosaur-themed exhibition will start next month.
Compound of 企画 (plan, project) and 展 (exhibition).