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There are 2 words beginning with ONIUM

ONIUMonium n. (Chemistry) any cation derived by the addition of a proton to the hydride of any element of the nitrogen…
onium n. (Chemistry) any organic derivative of these compounds.
onium n. (Physics) the bound pair of a particle and its antiparticle.
ONIUMSoniums n. Plural of onium.
ONIUM n. a compound containing ions of the kind with names ending in -onium.

Scrabble words — in black are valid world wide — in RED are not valid in North America — in GREEN are valid only in North America.
Definitions are short excerpt from the WikWik.org and 1Word.ws.

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See this list for:

  • English Wiktionary: 3 words
  • Scrabble in French: no word
  • Scrabble in Spanish: no word
  • Scrabble in Italian: no word
  • Scrabble in German: no word
  • Scrabble in Romanian: no word


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