silica
UK/'silikә/US
TOEFLC2
Definitions
n.
Silicon dioxide (SiO₂), the hard compound found in nature as quartz and sand and used to make glass.
二氧化硅（SiO₂），自然界以石英和砂的形式存在的坚硬化合物，用于制造玻璃。
Root Breakdown
Root-derivedsilic (flint) + -a (substance ending). Silica is the 'flint-stuff' itself — silicon dioxide, the compound that makes up sand, quartz, and glass, and the source from which the element silicon is refined.
Root silic still carries 3 more wordsCommon Collocations
- 1.silica gel硅胶
- 2.silica dust硅尘
- 3.fused silica熔融石英
- 4.silica sand硅砂
Example Sentences
- 1.
Each new pair of shoes came with a little packet of silica gel.
- 2.
Workers who breathe fine silica dust risk serious lung disease.
- 3.
Glass is made by melting silica sand at very high temperatures.