資料來源 : Webster's Revised Unabridged Dictionary (1913)

Undecylic \Un`de*cyl"ic\, a. (Chem.)
   Related to, derived from, or containing, undecyl;
   specifically, designating that member of the fatty acids
   which corresponds to undecane, and is obtained as a white
   crystalline substance, {C11H22O2}.