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单词 silica
释义

WordReference Random House Learner's Dictionary of American English © 2024
sil•i•ca /ˈsɪlɪkə/USA pronunciation   n. [uncountable]
  1. Chemistrya form of silicon that occurs esp. as quartz sand, flint, and agate.
si•li•ceous, si•li•cious /səˈlɪʃəs/USA pronunciation  adj. 

WordReference Random House Unabridged Dictionary of American English © 2024
sil•i•ca  (sil′i kə),USA pronunciation n. 
  1. Chemistrythe dioxide form of silicon, SiO2, occurring esp. as quartz sand, flint, and agate: used usually in the form of its prepared white powder chiefly in the manufacture of glass, water glass, ceramics, and abrasives. Also called silicon dioxide. 
  • Neo-Latin, derivative of Latin silex silex
  • 1795–1805

Collins Concise English Dictionary © HarperCollins Publishers::
silica /ˈsɪlɪkə/ n
  1. the dioxide of silicon, occurring naturally as quartz, cristobalite, and tridymite. It is a refractory insoluble material used in the manufacture of glass, ceramics, and abrasives
Etymology: 19th Century: New Latin, from Latin: silex
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