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There are 16 fifteen-letter words containing H, 2I, 3O, R and T

AEROLITHOLOGIESAEROLITHOLOGY n. the study of aerolites.
ALLOTRIOMORPHICallotriomorphic adj. (Chemistry) allotropic.
allotriomorphic adj. (Geology) xenomorphic.
ALLOTRIOMORPHIC adj. crystalline in internal structure but not in outward form.
CHORIOALLANTOICchorioallantoic adj. Of or pertaining to the chorioallantois.
CHORIOALLANTOIC adj. of or like a chorioallantois, a highly vascularized fetal membrane.
CHORIOALLANTOISchorioallantois n. (Anatomy) The vascular extraembryonic membrane, formed by the fusion of the allantois and the chorion…
CHORIOALLANTOIS n. a highly vascularized fetal membrane.
CHRONOBIOLOGISTchronobiologist n. A person who is involved in chronobiology.
CHRONOBIOLOGIST n. a student of chronobiology.
CORTICOTROPHINScorticotrophins n. Plural of corticotrophin.
CORTICOTROPHIN n. a hormone that stimulates the adrenal gland, also CORTICOTROPIN.
DIAPHOTOTROPIESDIAPHOTOTROPY n. the state of being diaphototropic, turning transversely to the light.
DIAPHOTOTROPISMDIAPHOTOTROPISM n. the state of being diaphototropic, turning transversely to the light.
HYDROBIOLOGISTShydrobiologists n. Plural of hydrobiologist.
HYDROBIOLOGIST n. a student of hydrobiology.
ORTHOGONALISINGorthogonalising v. Present participle of orthogonalise.
ORTHOGONALISE v. to make orthogonal, also ORTHOGONALIZE.
ORTHOGONALITIESorthogonalities n. Plural of orthogonality.
ORTHOGONALITY n. the state of being orthogonal.
ORTHOGONALIZINGorthogonalizing v. Present participle of orthogonalize.
ORTHOGONALIZE v. to make orthogonal, also ORTHOGONALISE.
PHOTOPERIODISMSphotoperiodisms n. Plural of photoperiodism.
PHOTOPERIODISM n. a plant or animal's response or capacity to respond to photoperiod.
PROTOHISTORIANSprotohistorians n. Plural of protohistorian.
PROTOHISTORIAN n. one who studies protohistory.
SOCIOHISTORICALsociohistorical adj. Of or pertaining to social and historical factors.
socio-historical adj. Alternative form of sociohistorical.
SOCIOHISTORICAL adj. of, relating to, or involving social history or a combination of social and historical factors.
THERIOMORPHOSISTHERIOMORPHOSIS n. transformation into a beast.

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: 139 words
  • Scrabble in French: 13 words
  • Scrabble in Spanish: 6 words
  • Scrabble in Italian: 11 words
  • Scrabble in German: no word
  • Scrabble in Romanian: 51 words


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