| 单词 | pumice |
| 释义 | pumice (once / 10736 pages) nv Pumice is a very light stone that comes from volcanic rock. Formed from lava, pumice is porous, or full of tiny holes. It may sound exotic, but you can buy one at the drug store and scrub your feet with it. The pumice found by a geologist or displayed in a museum exhibit about volcanoes is the same material as the pumice stones that you'd use to smooth the callouses off your feet. Pumice is also useful for "aging" denim (or making stone-washed jeans), and it's included in objects like pencil erasers and cinder blocks. The word comes from the Latin pumex, which shares a root with "foam." WORD FAMILYpumice: pumiced, pumices USAGE EXAMPLESDonkeys usually keep their hooves naturally pumiced by foraging for long miles over rocky ground. New York Times(Nov 17, 2016) This "dirt" is unlike anything found on Earth, Fulle says: a low-density mineral sponge, like pumice but extremely fragile. Science Magazine(Sep 29, 2016) Traverse primeval forest, old lava flows, new mud flows, pumice plains and flowered meadows. Seattle Times(Jul 13, 2016) 1n a light glass formed on the surface of some lavas; used as an abrasive Syn|Hyper pumice stone rock, stone material consisting of the aggregate of minerals like those making up the Earth's crust 2v rub with pumice, in order to clean or to smoothen Hyper rub move over something with pressure |
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