ククルビタシンMeanings1nouncucurbitacinchemistryA class of bitter-tasting compounds found in plants of the Cucurbitaceae family (e.g., cucumbers, melons). Used in chemistry and botany.ククルビタシンはウリ科か植しょく物ぶつに含ふくまれる苦にが味み成せい分ぶんです。Cucurbitacin is a bitter compound found in cucurbit plants.