| 单词 |
accaroid |
| 释义 |
accaroid, acaroid|ˈækərɔɪd|
Also ˈaccroid.
[Etym. unkn.; appar. not related to acaroid a.]
The name given to a resinous gum obtained from various Australian trees, esp. the blackboy or grass-tree, used for preparing varnish, paper size, etc. Usu. attrib., as accaroid gum, accaroid resin, etc.
The blackboy gum and Botany Bay gum yield red and yellow varieties respectively.
1857Dunglison Dict. Med. Sci. (ed. 12) 987/1 Xanthorrhœa, Grass Tree. A genus of trees in Australia... Two resins are obtained from them, one the yellow resin of Xanthorrhœa or of New Holland,..Botany Bay resin, Acaroid resin or gum. 1937R. S. Morrell et al. Synthet. Resins xiii. 307 Gum Accroides. This resin possesses various names, acaroid resin, grass tree gum, black boy gum, &c. There are two varieties, red and yellow. The red variety..dissolves in methylated spirit and gives varnishes which possess high finish very resistant to oil. 1959Chambers's Encycl. II. 84/1 Xanthorrhœa balsams are the accaroid resins from Xanthorrhœa species, particularly X. australis... The accaroids are varnish resins. |
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