oxal-
combining element in chemical terms, used in the sense ‘derived from or related to oxalic acid’, or ‘containing the radical oxalyl’.
oxalaˈcetic acid, a dicarboxylic acid, HOOC·CO·CH2·COOH, which crystallizes as an enol form and is produced in vivo by transamination from aspartic acid and in the Krebs cycle by oxidation of malic acid; so oxaˈlacetate, the anion, or an ester or salt of, oxalacetic acid. ‖ oxalæmia (ɒksəˈliːmɪə) Path. [mod.L., f. Gr. αἷµα blood]: see quot. oˈxalamide = oxamide. ˈoxalan [-an 2; cf. alloxan] = oxaluramide. oxaˈlantin [cf. alloxantin]: see quot. oxaˈlethyline, a poisonous oily liquid of composition C6H10N2; also, a general name for the series to which this belongs, as chloroxalethyline C6H9ClN2. oxalˈhydric acid, a former name for saccharic acid; hence oxalˈhydrate, a salt of this acid, a saccharate. ˈoxalite Min. = humboldtine. Also oxaluramide, oxalyl, etc.
| 1891 Jrnl. Chem. Soc. LX. 1333 On mixing..a benzene solution of carbon oxychloride with copper *oxalacetate..the copper salt takes up an appreciable quantity of chlorine. 1969 Oxalacetate [see glyoxylate]. |
| 1896 Jrnl. Chem. Soc. LXX. i. 599 Nef's ethylic ethoxyfumarate..when hydrolysed with hydrochloric acid, gives *oxalacetic acid. 1939 Ann. Reg. 1938 375 In the biological fixation of nitrogen by root nodule bacteria the formation of aspartic acid via the oxime of oxalacetic acid was confirmed. 1972 Arch. Biochem. & Biophysics CLIII. 226/1 Oxalacetic acid..functions as a key substrate in metabolism as the keto form; however, the pure compound crystallizes as the cis enol of hydroxymaleic acid. |
| 1892 Syd. Soc. Lex., *Oxalæmia, the presence of oxalates in the blood; a doubtful condition. |
| 1836–41 Brande Chem. (ed. 5) 1181 When oxalate of ammonia is distilled..the liquid which passes over contains a flocculent substance,..to which M. Dumas has given the name of *oxalamide. |
| 1866–77 Watts Dict. Chem. IV. 248 *Oxalan, syn. with Oxaluramide. |
| Ibid., *Oxalantin, C6H4N4O5..is related to parabanic acid in the same manner as alloxantin..to alloxan. |
| 1881 Ibid. VIII. 1450 *Oxalethylines. |
| 1838 T. Thomson Chem. Org. Bodies 75 The *oxalhydrate of lead which fell was collected on a filter and thoroughly washed with water. |
| Ibid., The *oxalhydric acid is a new and peculiar acid. |
| 1866–77 Watts Dict. Chem. IV. 277 *Oxalite, native ferrous oxalate, also called Humboldtine. |