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
XANTHIN
XANTHIN Xan "thin, n. [Gr. xanqo `s yellow. ]
1. (Physiol. Chem. ) A crystalline nitrogenous body closely related to both uric acid and hypoxanthin, present in muscle tissue, and occasionally found in the urine and in some urinary calculi. It is also present in guano. So called from the yellow color of certain of its salts (nitrates ).
2. (Chem. ) A yellow insoluble coloring matter extracted from yellow flowers; specifically, the coloring matter of madder. [Formerly written also xanthein. ]
3. (Chem. ) One of the gaseous or volatile decomposition products of the xanthates, and probably identical with carbon disulphide. [Obs. ]
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.
XANTHININE
XANTHININE Xan "thi *nine, n. [Gr. xanqo `s yellow + quinine. ] (Chem. )
Defn: A complex nitrogenous substance related to urea and uric acid, produced as a white powder; -- so called because it forms yellow salts, and because its solution forms a blue fluorescence like quinine.
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 .
Duden Dictionary
Xanthin
Xan thin Substantiv, Neutrum Biochemie , das |Xanth i n |zu griechisch xanthós = gelb (lich ); bei Verbindung mit Salpetersäure tritt eine Gelbfärbung ein als Zwischenprodukt beim Abbau der Purine im Blut, in der Leber und im Harn auftretende physiologisch wichtige Substanz
Xanthinoxidase
Xan thin oxi da se , Xan thin oxy da se Substantiv, feminin Medizin, Biochemie , die Xanthinoxydase |Xanth i noxidase Xanth i noxydase |die Xanthinoxidase; Genitiv: der Xanthinoxidase, Plural: die Xanthinoxidasen die Xanthinoxydase; Genitiv: der Xanthinoxydase, Plural: die Xanthinoxydasen Enzym , das Xanthin in Harnsäure überführt
The Wordsmith Dictionary