| 单词 |
pyrogen |
| 释义 |
pyrogen|ˈpaɪərədʒɛn|
[f. pyro- + -gen; lit. ‘fire-producer’, or ‘fire-produced’.]
A term proposed in various senses. †a. A name for electricity considered as a material substance; the ‘electric fluid’. rare. †b. (See quot. 1866–8.) rare. c. A substance which, when introduced into the blood, produces fever; a pyrogenetic agent.
a.1858Mayne Expos. Lex., Pyrogen, a term proposed for electricity considered as a material substance possessing weight. 1864in Webster.
b.1866–8Watts Dict. Chem. IV. 759 Pyrogen, a name applied by Dumas to pyro-acids and other products of the action of heat on organic bodies.
c.1896Allbutt's Syst. Med. I. 157 In 1875 I prepared a substance, which I ventured to call pyrogen, from putrid extract of flesh. 1955Times 30 Aug. 4/3 We have now reached the stage where bacterial pyrogens in pure form can, with advantage, replace the older materials and methods for producing a general stimulation of the defence mechanisms of the body. 1957New Scientist 12 Dec. 25/1 Rabbits, too, played their part..in pyrogen tests, to ensure the safety of injectable solutions. 1961M. Hynes Med. Bacteriol. (ed. 7) iii. 28 Fluids for parenteral use must be pyrogen⁓free as well as sterile. 1973Nature 16 Nov. 162/2 It is not known whether the malarial parasite produces a pyrogen, like bacteria, or whether the malarial fever results from destruction of red blood cells. |
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