单词 | sial |
释义 | sial1 of 2noun si·al ˈsīˌal plural -s 1 : siliceous or acid igneous rock whether solid or molten 2 : the lighter outer portion of the earth composed mainly of solid or molten rocks rich in silica and alumina compare sima sial- 2 of 2combining form variants or sialo- : saliva sialolith |
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