Webster's Revised Unabridged Dictionary -- Volume DEDex"tro- (?). A prefix, from L. dexter, meaning, pertaining to, or toward, the right; (Chem. & Opt.) having the property of turning the plane of polarized light to the right; as, dextrotartaric acid. Dex·trog"er·ous (?), a. (Physics & Chem.) See Dextrogyrate. Dex`tro·glu"cose` (?), n. [Dextro- + glucose.] (Chem.) Same as Dextrose. Dex`tro·gy"rate (?), a. [Dextro- + gyrate.] (Chem. & Opt.) Same as Dextrorotatory. Dex·tron"ic (?), a. (Chem.) Pertaining to, or derived from, dextrose; as, dextronic acid. -- Dextronic acid, a sirupy substance obtained by the partial oxidation of various carbohydrates, as dextrose, etc. Dex`tro·ro"ta·ry (?), a. (Physics & Chem.) See Dextrotatory. Dex`tro·ro"ta·to·ry (?), a. [Dextro- + rotatory.] (Chem. & Opt.) Turning, or causing to turn, toward the right hand; esp., turning the plane of polarization of luminous rays toward the right hand; as, dextrorotatory crystals, sugars, etc. Cf. Levorotatory. Dex·tror"sal (?), Dex"trorse` (?), a. [L. dextrorsum, contr. fr. dextrovorsum, dextroversum, toward the right side; dexter right + versus, vorsus, p. p. of vertere, vortere, to turn.] Turning from the left to the right, in the ascending line, as in the spiral inclination of the stem of the common morning-glory.
Dex"trose` (dĕks"trōs`), n. [See Dexter.] (Chem.) A sirupy, or white crystalline, variety of sugar, C6H12O6 (so called from turning the plane of polarization to the right), occurring in many ripe fruits. Dextrose and levulose are obtained by the inversion of cane sugar or sucrose, and hence called invert sugar. Dextrose is chiefly obtained by the action of heat and acids on starch, and hence called also starch sugar. It is also formed from starchy food by the action of the amylolytic ferments of saliva and pancreatic juice. |