| 单词 | lycopodium dust |
| 释义 | > as lemmaslycopodium dust 2. The fine powder formed by the ripe spores of species of Lycopodium, known as ‘vegetable brimstone’ from its inflammability. Also lycopodium dust, lycopodium powder.It is used in surgery as an absorbent; also in theatres for the production of stage lightning. ΘΚΠ society > occupation and work > materials > raw material > other vegetable materials > [noun] > lycopodium witch meal1792 lycopodium1836 vegetable brimstone1838 lycopode1866 vegetable sulphur1887 1836 J. M. Gully tr. F. Magendie Formulary (ed. 2) 173 Starch or lycopodium powder washed with alcohol, appears to preserve the auriferous salts the best. 1856 R. B. Todd & W. Bowman Physiol. Anat. II. 89 The vibrations of the paper are easily demonstrated by the movements of particles of fine sand, or lycopodium powder strewed upon it. 1877 L. A. Duhring Pract. Treat. Dis. Skin 235 Asborbent dusting powders, consisting of lycopodium dust..will be found most useful. 1966 F. H. Brightman Oxf. Bk. Flowerless Plants 56/2 The spores form a very fine, bright-yellow powder called ‘lycopodium powder’, which was formerly used as a constituent of ‘flash powder’. 1999 New Sci. 31 July 109/3 Remember that lycopodium powder can be dangerous because it is so fine that it can explode easily. < as lemmas |
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