Usually means: Translucent to opaque, lesser-quality opal.
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We found 10 dictionaries that define the word semiopal:

General (9 matching dictionaries)
  1. semiopal: Merriam-Webster
  2. semiopal: Wordnik
  3. semiopal: Wiktionary
  4. Semiopal, semiopal: Dictionary.com
  5. Semiopal: Online Plain Text English Dictionary
  6. semiopal: Webster's Revised Unabridged, 1913 Edition
  7. Semiopal: AllWords.com Multi-Lingual Dictionary
  8. semiopal: FreeDictionary.org
  9. Semiopal: TheFreeDictionary.com

Medicine (1 matching dictionary)
  1. online medical dictionary (No longer online)

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Definitions from Wiktionary (semiopal)

▸ noun:  (mineralogy) A variety of opal not possessing opalescence.

Similar:
opaline, opal, opalescence, menilite, opalisation, boulder opal, hyalite, jasper opal, fiorite, fire opal, more...

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Similar:
opaline, opal, opalescence, menilite, opalisation, boulder opal, hyalite, jasper opal, fiorite, fire opal, more...



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