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There are 17 twelve-letter words containing H, 4O and T

HOMOLOGATIONhomologation n. (Organic chemistry) Any reaction that converts a compound into the next member of a homologous series…
homologation n. (Law) Official certification.
HOMOLOGATION n. confirmation, agreement.
MONOPHYODONTmonophyodont adj. (Biology) Having only one set of teeth.
monophyodont n. (Biology) Any organism with only one set of teeth.
MONOPHYODONT n. an animal with only one set of teeth.
NEOORTHODOXYNeoorthodoxy n. Alternative form of Neo-orthodoxy.
neo-orthodoxy n. (Christianity, theology) A theological movement developed in the aftermath of World War I, largely a…
Neo-orthodoxy n. Alternative letter-case form of neo-orthodoxy.
ODONTOPHOBIAodontophobia n. An irrational fear of dentistry.
ODONTOPHOBIA n. the fear of teeth.
ODONTOPHORALodontophoral adj. Relating to the odontophore.
ODONTOPHORAL adj. of or like an odontophore, the rasping apparatus in molluscs, also ODONTOPHORAN.
ODONTOPHORANODONTOPHORAN n. an odontophore, the rasping apparatus in molluscs.
ODONTOPHORESodontophores n. Plural of odontophore.
ODONTOPHORE n. the rasping apparatus in molluscs.
OOPHORECTOMYoophorectomy n. (Medicine) Surgical removal of one or both ovaries.
oöphorectomy n. Alternative spelling of oophorectomy.
OOPHORECTOMY n. the operation of removing one or both of the ovaries, aka ovariotomy.
OPISTHODOMOIopisthodomoi n. Plural of opisthodomos.
OPISTHODOMOS n. (Greek) a portico or apartment at the back of an ancient Greek or Roman temple.
OPISTHODOMOSopisthodomos n. (Greek architecture) A porch at the rear of a temple, set against the blank back wall of the cella.
OPISTHODOMOS n. (Greek) a portico or apartment at the back of an ancient Greek or Roman temple.
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.
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.
PHOTOBIOLOGYphotobiology n. The study of the effects of light on living organisms, and on biological processes.
PHOTOBIOLOGY n. the study of the effects of light on organisms.
PHOTOCOMPOSEphotocompose v. To use photocomposition to prepare text for printing.
PHOTOCOMPOSE v. to set (as reading matter) by photocomposition.
PHOTOGEOLOGYphotogeology n. The use of aerial photography to interpret geologic features.
PHOTOGEOLOGY n. a branch of geology concerned with the identification and study of geological features through the study of aerial or orbital photographs.
ZOOPATHOLOGYzoopathology n. Animal pathology; veterinary pathology.
zoöpathology n. Alternative form of zoopathology.
ZOOPATHOLOGY n. the study of animal diseases.
ZOOPHYTOLOGYzoophytology n. The natural history of zoophytes.
zoöphytology n. Archaic spelling of zoophytology.
ZOOPHYTOLOGY n. the study of zoophytes, plantlike animals.

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: 80 words
  • Scrabble in French: 6 words
  • Scrabble in Spanish: 1 word
  • Scrabble in Italian: no word
  • Scrabble in German: no word
  • Scrabble in Romanian: no word


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