Alundum
a brand name for a substance consisting of fused alumina, used chiefly as an abrasive and as a refractory.
historical examples
emery, carborundum and alundum wheels are developed from the grindstone of the distant past.
inventors at work george iles
noun
trademark a hard material composed of fused alumina, used as an abrasive and a refractory
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a mineral, hydrous sulfate of aluminum, al 2 (so 4) 3 ⋅18h 2 o, occurring as a white, fibrous crust on quarry or mine walls.
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a p-ssageway, as the walk along one side of a cloister.
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zoology. covered with minute cracks or wrinkles and having a pale, leathery-brown color. having the color of soft brown leather. historical examples the head is a light yellow in all specimens i found, not alutaceous as schw. the mushroom, edible and otherwise m. e. hard its habitat, its reddish or alutaceous cap, and its paler […]
- Alush
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álvar núñez [ahl-vahr noo-nyeth,, -nyes] /ˈɑl vɑr ˈnu nyɛθ,, -nyɛs/ (show ipa), c1490–1557? spanish explorer in the americas. historical examples careful consideration of the narrative of cabeza de vaca sustains this conclusion. the medicine-men of the apache. (1892 n 09 / 1887-1888 (pages 443-604)) john g. bourke it is not possible to follow and to […]