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trihydric
▪ I. trihydric, a.1 Chem. (traɪˈhaɪdrɪk) [f. tri- 5 + Gr. ὕδωρ water + -ic.] Containing three hydroxyl groups, OH; thus glycerin or glycerol, C3H5(OH)3, is a trihydric alcohol; pyrogallic acid or pyrogallol, C6H3(OH)3, is a trihydric phenol.1866 Frankland Lect. Notes 269 Relations of Glycerin to the...
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trihydrogen
triˈhydrogen, a. Chem. [tri- 5 b.] Containing 3 atoms of hydrogen in combination, as trihydrogen phosphate, H3PO2.1869 [see trihydric a.2].
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Neutral fat
Triglycerides
Triglycerides are formed from the esterification of 3 molecules of fatty acids with one molecule of trihydric alcohol, glycerol (glycerine
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triatomic
triatomic, a. Chem. (traɪəˈtɒmɪk) [f. tri- + atom n. + -ic.] a. Having three atoms in the molecule. † b. = trivalent. Obs. c. Containing three hydroxyl groups (OH); = trihydric a.11862 Miller Elem. Chem. (ed. 2) III. 53 To the triatomic group [of elements] belong nitrogen, phosphorus, arsenic, antim...
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pyrogallic
pyrogallic, a. Chem. (ˌpaɪərəʊˈgælɪk) [f. pyro- 3 + gallic a.2] Produced from gallic acid by the action of heat: in pyrogallic acid, an acid substance, C6H6O3 (strictly a trihydric phenol, C6H3(OH)3, hence systematically named pyrogallol), which crystallizes in long flat colourless prisms, soluble i...
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triol
triol, n. Org. Chem. (ˈtraɪɒl) [f. tri- 5 a + -ol.] Any alcohol that contains three hydroxyl groups; a trihydric alcohol.1959 Cram & Hammond Org. Chem. iii. 38 Aliphatic and alicyclic compounds containing two hydroxyl groups are referred to as glycols; three hydroxyl groups, as trihydric alcohols......
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triglyceride
triglyceride Chem. (traɪˈglɪsəraɪd) [f. tri- 5 (irregularly used) + glyceride.] A compound in which three acid radicals are united by oxygen to glyceryl; i.e. they replace the three H atoms of the OH groups in glycerin or glycerol, C3H5(OH)3; e.g. stearin is called the triglyceride of stearic acid.1...
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phenolic
phenolic, a. and n. Chem. (fɪˈnɒlɪk) [f. phenol + -ic.] A. adj. a. Of the nature of, belonging to, derived from, or containing a phenol; esp. containing or being a hydroxyl group bonded directly to a benzene ring.1872 Watts Dict. Chem. VI. 916 Phenolic ethers. 1880 Friswell in Jrnl. Soc. Arts 16 Apr...
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prun-
prun- Chem. (pruːn) [f. prunus.] A formative element used in the names of several substances which occur in trees of the genus Prunus, as ˈprunase [-ase], an enzyme which hydrolyses β-glucosides (notably prunasin), liberating glucose, and occurs chiefly in bitter almonds and yeast, as well as in the...
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-itol
-itol, suffix Chem. (ɪtɒl) [f. -ite1 4 + -ol 1.] Used to form the names of polyhydric alcohols other than di- or trihydric alcohols. Such compounds were formerly given names terminated by -ite, as in dulcite, inosite, mannite. These names were later modified by the addition of -ol to express their a...
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ter-
ter- (tɜː(r)) the L. adv. ter ‘thrice’, in comb. 1. a. Prefixed to adjs., in sense ‘thrice, three times’, as ter-ˈtrinal, consisting of three sets of three; also expressing a high degree, as ter-ˈsacred [L. ter sacer], thrice sacred.1600 W. Watson Decacordon (1602) Pref. A vj b, The tersacred Aposto...
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tri-
tri-, prefix (traɪ, occas. trɪ) a. L. tri- and Gr. τρι-, combining form of trēs, τρεῖς three, τρίς thrice. The i, etymologically short in Greek and Latin, was in Latin sometimes lengthened, esp. in numerals (trīcēnī, trīgintā, etc.). In Eng. it is now usually long and diphthongal (aɪ), except in der...
Oxford English Dictionary
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