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There are 18 twelve-letter words containing H, I, 3O, S and 2T

HEORTOLOGISTheortologist n. A person who studies heortology.
HEORTOLOGIST n. one who practises heortology, the study of religious feasts.
HOMOEOSTATIChomoeostatic adj. Alternative spelling of homeostatic.
HOMOEOSTATIC adj. relating to homoeostasis.
OCTOSTICHOUSoctostichous adj. (Botany) octastichous.
OCTOSTICHOUS adj. in eight rows, also OCTASTICHOUS.
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.
ORTHODONTIASORTHODONTIA n. the rectification of crookedness in the teeth, also ORTHODONTICS.
ORTHODONTICSorthodontics n. (Medicine) A specialty of dentistry concerned with correcting misalignment of teeth.
ORTHODONTICS n. the rectification of crookedness in the teeth, also ORTHODONTIA.
ORTHODONTISTorthodontist n. An orthodontic dentist.
ORTHODONTIST n. one who practises orthodontics.
ORTHOTONESISorthotonesis n. The accentuation of a proclitic or enclitic.
ORTHOTONESIS n. accentuation of a proclitic or enclitic, as opposed to enclisis.
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.
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.
TRAITORHOODSTRAITORHOOD n. the state of being a traitor.
TRICHOTOMOUStrichotomous adj. Divided into three parts, or into threes; forking three ways.
trichotomous adj. (Set theory) Such that, for all x and y in X, and for a binary relation R, exactly one of xRy, yRx or x=y holds.
TRICHOTOMOUS adj. divided into three parts.
TROPHOZOITEStrophozoites n. Plural of trophozoite.
TROPHOZOITE n. in Protozoa, the trophic phase of an adult.
WITHOUTDOORSwithoutdoors adv. (Archaic) outdoors.
WITHOUTDOORS adv. outdoors.

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: 48 words
  • Scrabble in French: 3 words
  • Scrabble in Spanish: 1 word
  • Scrabble in Italian: 5 words
  • Scrabble in German: no word
  • Scrabble in Romanian: 3 words


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