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List of 13-letter words containing

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There are 19 thirteen-letter words containing A, H, 3O and 2T

AUTOCHTHONOUSautochthonous adj. Native to the place where found; indigenous.
autochthonous adj. (Biology, medicine) Originating where found; found where it originates.
autochthonous adj. (Geology) Buried in place, especially of a fossil preserved in its life position without disturbance…
CYTOPATHOLOGYcytopathology n. (Cytology, pathology) The branch of pathology that deals with abnormalities of cells.
CYTOPATHOLOGY n. the study of cells in illness.
DIAPHOTOTROPYDIAPHOTOTROPY n. the state of being diaphototropic, turning transversely to the light.
HOMOEOPATHISThomoeopathist n. Alternative form of homeopathist.
homœopathist n. Obsolete form of homeopathist.
HOMOEOPATHIST n. one who practises homoeopathy, also HOMEOPATH, HOMEOPATHIST, HOMOEOPATH.
OPISTHOSOMATAopisthosomata n. Plural of opisthosoma.
OPISTHOSOMA n. the abdomen of a spider or other arachnid.
ORTHOGNATHOUSorthognathous adj. (Anatomy) straight-jawed.
ORTHOGNATHOUS adj. having a lower jaw that neither projects nor recedes, also ORTHOGNATHIC.
ORTHOGONALITYorthogonality n. (Mathematics, statistics, software engineering) The property of being orthogonal.
ORTHOGONALITY n. the state of being orthogonal.
PHOTOCATHODESphotocathodes n. Plural of photocathode.
PHOTOCATHODE n. a cathode that emits electrons when exposed to radiant energy and esp. light.
PHOTOMONTAGESphotomontages n. Plural of photomontage.
PHOTOMONTAGE n. montage using photographic images.
PHOTOREACTIONphotoreaction n. (Chemistry) a photochemical reaction.
PHOTOREACTION n. a photochemical reaction.
PHOTOVOLTAICSphotovoltaics n. (Physics) The technology of the conversion of sunlight into electricity using semiconductors that exhibit…
PHOTOVOLTAICS n. the science and technology of photovoltaic devices and substances.
POSTHOLOCAUSTpostholocaust adj. After the Holocaust.
POSTHOLOCAUST adj. following the Holocaust.
PROSTHODONTIAPROSTHODONTIA n. the provision of false teeth, also PROSTHODONTICS.
PROTOCHORDATEprotochordate n. Any chordate of the phyla Hemichordata, Urochordata or Cephalochordata.
PROTOCHORDATE n. a member of the Protochordata.
SOMATOTROPHICsomatotrophic adj. That stimulates body growth, especially by producing somatotrophin.
SOMATOTROPHIC adj. promoting bodily growth, also SOMATOTROPIC.
SOMATOTROPHINsomatotrophin n. Alternative spelling of somatotropin.
SOMATOTROPHIN n. a polypeptide growth hormone, also SOMATOTROPIN, SOMATOTROPINE.
TAUTOCHRONOUStautochronous adj. Occupying the same time.
tautochronous adj. (Mathematics) Relating to, or having the properties of, a tautochrone.
TAUTOCHRONOUS adj. lasting the same amount of time.
THORACOTOMIESthoracotomies n. Plural of thoracotomy.
THORACOTOMY n. surgical incision of the chest wall.
ULTRAORTHODOXultraorthodox adj. Very orthodox, chiefly among Jewish sects.
ultra-Orthodox adj. (Of a Jew) Very strictly observant; Haredi; being either Hasidic or Litvish (Misnagdic).
ULTRAORTHODOX adj. extremely orthodox.

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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