What prefix before saccharide would you use to describe sucrose

"Mono" is the prefix that would be used before saccharide to describe sucrose, making it "Monosaccharide".

Mono is a Greek word usually used to indicate "Single" and Monosaccharide is the simple sugar which is the basic source of carbohydrates. This belongs to the class of sugar which cannot be further hydrolyzed into simpler sugar.