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单词 opal
释义

WordReference Random House Learner's Dictionary of American English © 2024
o•pal /ˈoʊpəl/USA pronunciation   n. 
  1. Mineralogya mineral, a form of silica, found in many varieties and colors, including milky white, sometimes made into a gemstone with many shining colors in it: [countable]a ring with two beautiful, shiny opals.[uncountable]a necklace of opal.

WordReference Random House Unabridged Dictionary of American English © 2024
o•pal  (ō′pəl),USA pronunciation n. 
  1. Mineralogya mineral, an amorphous form of silica, SiO2 with some water of hydration, found in many varieties and colors, including a form that is milky white.
  2. Jewelryan iridescent variety of this that is used as a gem.
  3. Jewelrya gem of this.
  • Greek opállios opal, gem; probably from a source akin to Sanskrit upala precious stone
  • Latin opalus
  • Middle English 1350–1400

O•pal  (ō′pəl),USA pronunciation n. 
  1. a female given name.

Collins Concise English Dictionary © HarperCollins Publishers::
opal /ˈəʊpəl/ n
  1. an amorphous, usually iridescent, mineral that can be of almost any colour, found in igneous rocks and around hot springs. It is used as a gemstone. Composition: hydrated silica. Formula: SiO2.nH2O
Etymology: 16th Century: from Latin opalus, from Greek opallios, from Sanskrit upala precious stone

ˈopal-ˌlike adj
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更新时间：2025/7/31 11:23:32