/buy'yeuh ret", buy"yeuh ret'/ , n. Chem.
a white crystalline substance, C 2 H 5 O 2 N 3 ·H 2 O, soluble in water and alcohol, used for the identification of urea, from which it is formed on heating. Also called allophanamide, carbamylurea .
[ Biuret (1847); see BI- 1 , UREA, -URET ]