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There are 9 twelve-letter words containing H, 2O, 2P, R and 2T

HAPTOTROPISMhaptotropism n. (Biology) The movement of parts of a plant (especially tendrils) in response to a touch stimulus.
HAPTOTROPISM n. curving in response to touch, as a tendril.
PHOTOPRODUCTphotoproduct n. (Chemistry) Any product of a photochemical reaction.
PHOTOPRODUCT n. a product of a photochemical reaction.
PHOTOTHERAPYphototherapy n. The use of light to treat disorders of the skin, and certain mood disorders.
PHOTOTHERAPY n. the treatment of disease by light.
PHOTOTROPHICphototrophic adj. (Biology) That exhibits phototrophy.
PHOTOTROPHIC adj. relating to phototropism, movement directed by light.
PHOTOTROPIESPHOTOTROPY n. change of colour due to wavelength of incident light.
PHOTOTROPISMphototropism n. (Biology) The movement of a plant towards or away from light.
PHOTOTROPISM n. movement directed by light.
PROTOPATHIESPROTOPATHY n. first or direct experience.
PROTOTROPHICprototrophic adj. (Biology) Of or pertaining to a prototroph or to prototrophy.
PROTOTROPHIC adj. of bacteria, feeding directly on uncombined elements.
TROPHOTROPICtrophotropic adj. Relating to trophotropy.
TROPHOTROPIC adj. related to trophotropism, direction of growth by nutritional factors.

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 1Word.ws and WikWik.org.

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See this list for:

  • English Wiktionary: 44 words
  • Scrabble in French: 6 words
  • Scrabble in Spanish: no word
  • Scrabble in Italian: no word
  • Scrabble in German: no word
  • Scrabble in Romanian: no word


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