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List of 13-letter words containing

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There are 7 thirteen-letter words containing D, H, I, 2O, P and 2R

HYDROPEROXIDEhydroperoxide n. (Organic chemistry) any mono-substituted derivative of hydrogen peroxide - ROOH.
HYDROPEROXIDE n. a compound containing an O2H group.
HYDROTROPISMShydrotropisms n. Plural of hydrotropism.
HYDROTROPISM n. growth in the direction of water.
HYPERLORDOSIShyperlordosis n. (Pathology) Particularly severe lordosis.
MODERATORSHIPmoderatorship n. The position or office of a moderator.
MODERATORSHIP n. the office of moderator.
ORTHOPTEROIDSorthopteroids n. Plural of orthopteroid.
ORTHOPTEROID n. a member of the Orthoptera, cockroaches.
OVERLORDSHIPSoverlordships n. Plural of overlordship.
OVERLORDSHIP n. the position of overlord.
PYRITOHEDRONSpyritohedrons n. Plural of pyritohedron.
PYRITOHEDRON n. a pentagonal dodecahedron.

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: 70 words
  • Scrabble in French: 2 words
  • Scrabble in Spanish: 6 words
  • Scrabble in Italian: 2 words
  • Scrabble in German: no word
  • Scrabble in Romanian: 11 words


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