pyrogenousadj.

1821 T. Weaver in Ann. Philos. New Ser. 2 253 Pyrogeneous formations. Mineral masses affected by the operation of subterraneous fire.

1832 S. Hibbert Hist. Extinct Volcanos of Neuwied xxii. 154 Ejected fragments which approach in character to those of granite,—so nearly, indeed, as to give some little weight to the hypothesis, that they are merely pyrogenous modifications of this rock.

1845 J. Phillips & C. G. B. Daubeny Geol. in Encycl. Metrop. VI. 760/1 The phenomena of pyrogenous rocks.

1854 C. J. Hempel tr. A. Teste Homœopathic Materia Medica 119 Kreosota, a pyrogenous product... When pure, this substance acts on the skin..like a caustic.

1947 A. H. Warth Chem. & Technol. Waxes 241 These reduced oils can be brought to 338° (640° F) fire-test without acquiring any pyrogenous odor.

1997 Appl. Radiation & Isotopes 48 205/1 No pyrogenous substance was detected in the final product.

1874 Brit. Med. Jrnl. 15 Aug. 216/1 From the slightest pyrogenous effect or merest evidence of morbility, as discovered by the thermometer.

1894 Lancet 2 July 47/2 The pyrogenous toxines of anthrax and diphtheria have been isolated and separated from the toxines which produce the other symptoms.

1914 Science 21 Aug. 282/1 Certain chromatin particles, the tingible or pyrogenous bodies, are formed and changed into pigment balls.

1982 Brain Res. Bull. 9 519/2 Systemic and local treatments with drugs such as a piromen and other pyrogenous substances.