葡萄干 (pú tao gān) literally means 'dried grape' — combining 葡萄 (pú tao, 'grape') and 干 (gān, 'dried'). It refers specifically to raisins: grapes that have been dehydrated either naturally in the sun or by mechanical drying. Unlike fresh grapes, 葡萄干 is chewy, sweet, and concentrated in flavor and sugar, commonly eaten as a snack or used in baking, cooking, and traditional Chinese desserts.

This compound word follows a common Chinese pattern where a noun (grape) combines with a descriptive verb/adjective (dried) to form a new noun. While 葡萄 itself is a two-character word borrowed from ancient Persian via Sanskrit, the full term 葡萄干 is fully integrated into modern Mandarin and appears in everyday vocabulary, food labels, and recipes. It’s widely available in supermarkets, snack aisles, and health food stores across China and other Chinese-speaking regions.