— caffeinic /ka fee"nik, kaf'ee in"ik/ , adj.
/ka feen", kaf"een, kaf"ee in/ , n. Chem., Pharm.
a white, crystalline, bitter alkaloid, C 8 H 10 N 4 O 2 , usually derived from coffee or tea: used in medicine chiefly as a nervous system stimulant.
Also, caffein .
[ 1820-30; caféine, equiv. to café COFFEE + -ine -INE 2 ]