The term 'Museum Collection' can be summarized as a collection of ART pieces held in a museum. This collection typically includes paintings, sculptures, and other works of ART that have been acquired by the museum over time. The crossword solution for this term is ART, which is an abbreviation for the word 'artwork'. Artwork is a broad term used to describe any form of visual expression, such as painting, sculpture, photography, and other forms of creative expression. Museums often acquire artwork from various sources, including private collections, galleries, and auctions. These pieces are then placed in the museum's collection for public viewing and appreciation.