simple sugar

Từ điển Oxford Learners Wordfinder Dictionary

noun

a sugar (like sucrose or fructose) that does not hydrolyse to give other sugars;
the simplest group of carbohydrates
• Syn:
monosaccharide, monosaccharose
• Hypernyms:
carbohydrate, saccharide, sugar
• Hyponyms:
triose, tetrose, pentose, hexose, aldose, ketose