单词 | pyrogenetic |
释义 | pyrogeneticadj. 1. ΚΠ 1858 R. G. Mayne Expos. Lexicon Med. Sci. (1860) 1053/1 Pyrogeneticus,..of or belonging to Pyrogenesia, fire, heat, or warmth: pyrogenetic. b. Medicine. Producing fever (= pyrogenic adj. 2); (also) thermogenic. Now rare. ΘΚΠ the world > health and disease > ill health > a disease > fever > [adjective] > producing feverous1603 feverish1653 febrific1710 febrifacient1803 pyrogenetic1871 pyrogenic1871 pyrogenous1874 the world > health and disease > ill health > a disease > high or low temperature > [adjective] > high temperature > causing inflammatory1733 warm1737 pyretic1850 pyrogenetic1871 1871 S. Fenwick Student's Guide Med. Diagnosis (ed. 2) xi. 186 The initial or pyrogenetic stage, which generally begins with a shivering fit, in which the temperature is high, although the patient complains of feeling cold. 1874 tr. H. W. von Ziemssen et al. Cycl. Pract. Med. I. 255 What the chemical nature of these pyrogenetic processes may be, we have never learned. 1885 Buck's Ref. Handbk. Med. Sci. II. 226 Not the least curious phenomenon of the pyrogenetic mechanism is the influence that increases the resistance to cold. 1896 T. C. Allbutt et al. Syst. Med. I. 155 Artificial fever produced by the introduction of pyrogenetic substances. 1915 Science 10 Sept. 357/1 The fact that well-washed bacteria have much less tendency to cause a reaction is taken as evidence that besides the dead germs there are reaction-producing or pyrogenetic substances in the vaccines. 1932 Lancet 13 Feb. 340/2 The pyrogenetic action of sulfosin was marked in all patients except one. 2. a. Chemistry. Of a reaction: caused by the application of heat (= pyrogenic adj. 1b). rare. ΘΚΠ the world > matter > chemistry > chemical reactions or processes > [adjective] > of or relating to named chemical reactions or processes > having undergone pyrolysis > pyrogenic pyrogenic1887 pyrogenetic1906 1906 Jrnl. Amer. Chem. Soc. 28 289 In those cases where the chemistry of the change is but imperfectly understood, as with many of the color and pyrogenetic reactions, the educational value of the test is but slight. 1946 V. Haensel & R. H. Lusher tr. X. J. Eudin et al. Life of Chemist App. 515 In 1901 you started your work on the pyrogenetic decomposition of organic compounds, of alcohol in particular. b. Produced or generated by the action of fire or heat; (Geology) (of a mineral) crystallizing directly from magma at high temperature. Cf. pyrogenic adj. 1. ΘΚΠ the world > the earth > minerals > types of mineral > [adjective] > type of origin paragenetic1853 paragenic1854 pyrogenetic1909 1909 Science 5 Feb. 205/1 A consideration of all known pyrogenetic minerals..calls attention to the compounds that are repeatedly formed in igneous magmas. 1912 Jrnl. Industr. & Engin. Chem. 4 759/2 By breaking up the very complex molecule which rubber doubtless possesses, by pyrogenetic process, i.e., by dry distillation, a veritable maze of all kinds of gases, oils and resins was obtained. 1950 F. H. Hatch et al. Petrol. Igneous Rocks (ed. 10) iii. 163 The separation of these pyrogenetic minerals leaves the liquid relatively enriched in H2O and various other components of low atomic and molecular weights. 1977 Analyt. Chem. 49 178R/1 Thermal decomposition products of coal... Pyrogenetic water, tar, aromatic hydrocarbons, NH3, coke, and gas were determined. 1990 C. Pellant Rocks, Minerals & Fossils 11/1 At the highest temperatures the dense silicates of iron and magnesium form... These ‘pyrogenetic’ minerals contain no water in their molecular structure. This entry has been updated (OED Third Edition, December 2007; most recently modified version published online March 2022). < adj.1858 |
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