English-Thai Dictionary
xanthine
N สารประกอบ สีเหลือง ใน โมเลกุล ของ สีย้อม san-pra-kob-se-luang-nai-mo-lea-kuan-kong-se-yom
Webster's 1913 Dictionary
XANTHINE; XANTHIN
Xan "thine, n. Also Xan "thin. [Gr. xanqo `s yellow. ] (Physiol. Chem. )
Defn: A white microcrystalline nitrogenous compound, C5H4O2N4, present in muscle tissue, in the liver, spleen, pancreas, and other organs, and also in urine (in small quantities ) and some urinary calculi, and in the juices of certain plants; -- so called because it leaves a yellow residue when evaporated to dryness with nitric acid. Xanthine is closely related to uric acid.
New American Oxford Dictionary
xanthine
xan thine |ˈzanˌTHēn, -THin ˈzænθin | ▶noun Biochemistry a crystalline compound that is found in blood and urine and is an intermediate in the metabolic breakdown of nucleic acids to uric acid. [A purine derivative; chem. formula: C 5 H 4 N 4 O 2. ] • any of the derivatives of this, including caffeine and related alkaloids. ORIGIN mid 19th cent.: from xanthic (from Greek xanthos ‘yellow ’ + -ic ) + -ine 4 .
Oxford Dictionary
xanthine
xanthine |ˈzanθiːn | ▶noun [ mass noun ] Biochemistry a crystalline compound found in blood and urine which is an intermediate in the metabolic breakdown of nucleic acids to uric acid. ●A purine derivative; chem. formula: C 5 H 4 N 4 O 2. • [ count noun ] any of the derivatives of this, including caffeine and related alkaloids. ORIGIN mid 19th cent.: from xanthic + -ine 4 .
The Wordsmith Dictionary