opal 1
noundomain: substance
Princeton WordNet [ver.3.1]
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EnglishDefinition
a translucent mineral consisting of hydrated silica of variable color; some varieties are used as gemstones
Hypernym
mineral 1
noun
solid homogeneous inorganic substances occurring in nature having a definite chemical composition
opaque gem 1
noun
a gemstone that is opaque
EnglishHyponym
black opal 1
noun
a dark colored opal with internal reflections of green or red
fire opal 1
noun
an opal with flaming orange and yellow and red colors
harlequin opal 1
noun
a reddish opal with small patches of brilliant color
menilite 1
noun
a greyish-brown form of the mineraloid opal.
