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Ureide :: Ureide (n.) Any one of the many complex derivatives of urea; thus, hydantoin, and, in an extended dense, guanidine, caffeine, et., are ureides..

Phenol :: Phenol (n.) Any one of the series of hydroxyl derivatives of which phenol proper is the type.

Methionic :: Methionic (a.) Of, pertaining to, or designating, a sulphonic (thionic) acid derivative of methane, obtained as a stable white crystalline substance, CH2.(SO3H)2, which forms well defined salts..

Sulphion :: Sulphinide (n.) A white or yellowish crystalline substance, C6H4.(SO2.CO).NH, produced artificially by the oxidation of a sulphamic derivative of toluene. It is the sweetest substance known, having over two hundred times the sweetening power of sugar, and is known in commerce under the name of saccharine. It has acid properties and forms salts (which are inaccurately called saccharinates)..

Conine :: Conine (n.) A powerful and very poisonous vegetable alkaloid found in the hemlock (Conium maculatum) and extracted as a colorless oil, C8H17N, of strong repulsive odor and acrid taste. It is regarded as a derivative of piperidine and likewise of one of the collidines. It occasions a gradual paralysis of the motor nerves. Called also coniine, coneine, conia, etc. See Conium, 2..

Xylenol :: Xylenol (n.) Any one of six metameric phenol derivatives of xylene, obtained as crystalline substances, (CH3)2.C6H3.OH..

Hydantoin :: Hydantoin (n.) A derivative of urea, C3H4N2O2, obtained from allantion, as a white, crystalline substance, with a sweetish taste; -- called also glycolyl urea..

Tyrosin :: Tyrosin (n.) A white crystalline nitrogenous substance present in small amount in the pancreas and spleen, and formed in large quantity from the decomposition of proteid matter by various means, -- as by pancreatic digestion, by putrefaction as of cheese, by the action of boiling acids, etc. Chemically, it consists of oxyphenol and amidopropionic acid, and by decomposition yields oxybenzoic acid, or some other benzol derivative..

Indogenide :: Indogenide (n.) Any one of the derivatives of indogen, which contain that group as a nucleus..

Thienyl :: Thienyl (n.) The hypothetical radical C4H3S, regarded as the essential residue of thiophene and certain of its derivatives..

Pyr- :: Pyr- () Combining forms designating fire or heat; specifically (Chem.), used to imply an actual or theoretical derivative by the action of heat; as in pyrophosphoric, pyrosulphuric, pyrotartaric, pyrotungstic, etc..

Nitroform :: Nitroform (n.) A nitro derivative of methane, analogous to chloroform, obtained as a colorless oily or crystalline substance, CH.(NO2)3, quite explosive, and having well-defined acid properties..

Orcin :: Orcin (n.) A colorless crystalline substance, C6H3.CH3.(OH)2, which is obtained from certain lichens (Roccella, Lecanora, etc.), also from extract of aloes, and artificially from certain derivatives of toluene. It changes readily into orcein..

Stythe :: Styryl (n.) A hypothetical radical found in certain derivatives of styrolene and cinnamic acid; -- called also cinnyl, or cinnamyl..

Derivative :: Derivative (n.) A word formed from another word, by a prefix or suffix, an internal modification, or some other change; a word which takes its origin from a root..

Tetrathionic :: Tetrathionic (a.) Of, pertaining to, or designating, a thionic derivative, H/S/O/, of sulphuric acid, obtained as a colorless, odorless liquid..

Pentyl :: Pentyl (n.) The hypothetical radical, C5H11, of pentane and certain of its derivatives. Same as Amyl..

Nitroquinol :: Nitroquinol (n.) A hypothetical nitro derivative of quinol or hydroquinone, not known in the free state, but forming a well defined series of derivatives..

Glutazine :: Glutazine (n.) A nitrogenous substance, forming a heavy, sandy powder, white or nearly so. It is a derivative of pyridine..

Xylamide :: Xylamide (n.) An acid amide derivative of xylic acid, obtained as a white crystalline substance..

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