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List of 13-letter words containing

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There are 5 thirteen-letter words containing H, 2I, 3O and 2T

IONTOPHORETICiontophoretic adj. Of or pertaining to iontophoresis.
IONTOPHORETIC adj. relating to iontophoresis.
ORNITHOLOGISTornithologist n. A person who studies or practices ornithology.
ORNITHOLOGIST n. one who studies birds.
PHOTOPOSITIVEphotopositive adj. (Biology) having a positive phototropic or phototactic response; attracted by light.
PHOTOPOSITIVE adj. exhibiting positive phototropism or phototaxis.
PHOTOTOXICITYphototoxicity n. Any adverse effect due to exposure to light, especially such effects on the skin.
PHOTOTOXICITY n. the state of being phototoxic.
PROTOHISTORICprotohistoric adj. Of or pertaining to protohistory.
PROTOHISTORIC adj. relating to protohistory.

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: 18 words
  • Scrabble in French: 1 word
  • Scrabble in Spanish: 1 word
  • Scrabble in Italian: 5 words
  • Scrabble in German: no word
  • Scrabble in Romanian: 13 words


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