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There are 5 eleven-letter words containing RIDIU

ANTHERIDIUMantheridium n. (Botany, mycology) An organ producing male gametes called antherozoids, found in some algae, ferns, and bryophytes.
ANTHERIDIUM n. the male reproductive organ of some plants, also ANTHERID.
CLOSTRIDIUMclostridium n. Any of several mostly anaerobic gram-positive bacteria, of the genus Clostridium, that are present in…
Clostridium prop.n. A taxonomic genus within the family Clostridiaceae – the clostridium bacteria.
CLOSTRIDIUM n. any of a genus of spore-forming mostly anaerobic soil or intestinal bacteria.
HESPERIDIUMhesperidium n. Any of several kinds of true berries, including citrus fruit such as the lemon and lime, which have…
HESPERIDIUM n. a plant with a berry like a citrus fruit.
OSMIRIDIUMSosmiridiums n. Plural of osmiridium.
OSMIRIDIUM n. a very hard corrosion-resistant white or grey natural alloy of osmium and iridium, also IRIDOSMINE, IRIDOSMIUM.
SPHAERIDIUMsphaeridium n. (Zoology) A sense organ found on the exterior of most sea urchins, consisting of an oval or spherical…
SPHAERIDIUM n. a minute spheroidal body on the surface of a sea urchin, perhaps a sense organ.

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: 8 words
  • Scrabble in French: 1 word
  • Scrabble in Spanish: no word
  • Scrabble in Italian: no word
  • Scrabble in German: no word
  • Scrabble in Romanian: 1 word


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