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There are 12 twelve-letter words containing H, 3O, P, S and 2T

HETEROTOPOUSheterotopous adj. Exhibiting heterotopy.
HETEROTOPOUS adj. relating to heterotopy, displacement of an organ of the body, also HETEROTOPIC.
OPISTHOTONICopisthotonic adj. Relating to opisthotonus.
OPISTHOTONIC adj. of or like opisthotonos, extreme arching backwards of the spine and neck as a result of spasm of the muscles in that region.
OPISTHOTONOSopisthotonos n. (Medicine) Sustained tetanic spasm in which the body is bent backwards and stiffened, as produced by various diseases.
OPISTHOTONOS n. extreme arching backwards of the spine and neck as a result of spasm of the muscles in that region, etc.
ORTHOPTEROUSorthopterous adj. (Zoology) Belonging to the Orthoptera.
ORTHOPTEROUS adj. pertaining or belonging to insect order including grasshoppers, crickets, etc.
ORTHOTROPIESORTHOTROPY n. the state of being orthotropic, growing along a vertical axis.
ORTHOTROPISMorthotropism n. The property of being orthotropic or orthotropous.
ORTHOTROPISM n. vertical growth.
ORTHOTROPOUSorthotropous adj. (Botany, of an ovule) Growing straight and having the micropyle at the apex.
ORTHOTROPOUS adj. growing straight, so that the micropyle is opposite the stalk.
PHOTOTONUSESPHOTOTONUS n. the sensitivity of a living organism to 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.
PROTOHISTORYprotohistory n. The period between prehistory and history, during which a culture or civilization has not yet developed…
PROTOHISTORY n. the study of human beings in the times that immediately antedate recorded history.
TROPHOZOITEStrophozoites n. Plural of trophozoite.
TROPHOZOITE n. in Protozoa, the trophic phase of an adult.

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: 38 words
  • Scrabble in French: 5 words
  • Scrabble in Spanish: no word
  • Scrabble in Italian: 2 words
  • Scrabble in German: no word
  • Scrabble in Romanian: no word


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