opal

noun \ ˈō-pəl \
Updated on: 9 Nov 2017

Definition of opal

: a usually amorphous mineral that is a hydrated silica softer and less dense than quartz and typically with definite and often marked iridescent play of colors and is used especially as a gem

Recent Examples of opal from the Web

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Origin and Etymology of opal

Latin opalus, from Greek opallios, ultimately from Sanskrit upala stone, jewel


OPAL Defined for English Language Learners

opal

noun

Definition of opal for English Language Learners

  • : a white or clear stone that reflects changing colors and that is used in jewelry


OPAL Defined for Kids

opal

noun \ ˈō-pəl \

Definition of opal for Students

: a mineral with soft changeable colors that is used as a gem


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