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There are 12 fifteen-letter words containing H, 2I, L, 3O and R

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.
CHRONOBIOLOGIESchronobiologies n. Plural of chronobiology.
CHRONOBIOLOGY n. the study of biological rhythms.
CHRONOBIOLOGISTchronobiologist n. A person who is involved in chronobiology.
CHRONOBIOLOGIST n. a student of chronobiology.
HYDROBIOLOGICALhydrobiological adj. Of or pertaining to hydrobiology.
HYDROBIOLOGICAL adj. relating to hydrobiology, the study of aquatic organisms.
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.
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.

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: 90 words
  • Scrabble in French: 6 words
  • Scrabble in Spanish: 4 words
  • Scrabble in Italian: 14 words
  • Scrabble in German: no word
  • Scrabble in Romanian: 83 words


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