Longman Dictionary of Contemporary English homepage

Topic: EARTH SCIENCES

Date: 1500-1600
Language: Latin
Origin: opalus, from Sanskrit upala 'stone, jewel'

opal

 noun
     
o‧pal [uncountable and countable]
DCJHE a type of white stone with changing colours in it, often used in jewellery
Definition of opal from the Longman Dictionary of Contemporary English within
the topic EARTH SCIENCES
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