Chem. [f. TRI- 5 + -OSE2.] a. Group name of the sugars containing three atoms of carbon, C3H6O3; the two possible cases are aldotriose, CH2OH.CHOH.CHO, and ketotriose, CH2OH.CO.CH2OH. b. It has also been used as a group name and as a termination for the trisaccharides, i.e., those sugars which break up on hydrolysis into three simple sugars.

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1894.  Muir & Morley, Watts’ Dict. Chem., IV. 531. [Sugars] are designated according to the number of carbon atoms they contain: thus, pentose containing C5,… Triose C3H4O3, glycerose.

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1894.  M‘Gowan, Bernthsen’s Org. Chem. (ed. 2), 317. Sugars of the above [cane sugar] group are termed ‘-bioses,’ e. g. milk sugar is lacto-biose. Similarly raffinose is a ‘-triose,’ Mele-triose.

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1895.  Athenæum, 26 Jan., 123/1. [A paper] ‘Presence of a Triose in Starch Transformation Products’ [was read].

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