Search the dictionary A Chinese word or character, or English Search 4 entries. lóngdǎn 龙胆 rough gentian lóngdǎn 龍膽 rough gentian lóngdǎnzǐ 龙胆紫 gentian violet C25H30ClN3 lóngdǎnzǐ 龍膽紫 gentian violet C25H30ClN3