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There are 16 thirteen-letter words containing H, 3O, P, 2R and T

ANTHROPOMORPHanthropomorph n. A figure in ancient art resembling a human being.
anthropomorph n. An anthropomorphic character.
ANTHROPOMORPH n. a stylized human figure.
ARTHROSPOROUSarthrosporous adj. Relating to arthrospores.
ARTHROSPOROUS adj. of or like an arthrospore, also ARTHROSPORIC.
CHROMATOPHOREchromatophore n. A pigment-bearing cell or structure found in certain fish, reptiles, cephalopods, and other animals.
CHROMATOPHORE n. a pigment-bearing cell.
CHROMOPROTEINchromoprotein n. (Biochemistry) Any protein, such as haemoglobin, that has a metal-containing pigmented group such as haem.
CHROMOPROTEIN n. any of various proteins (as hemoglobins, carotenoids, or flavoproteins) having a pigment as a prosthetic group.
HETEROSPOROUSheterosporous adj. (Botany, of an organism) Producing both male and female gametophytes.
HETEROSPOROUS adj. producing two different sizes or kinds of spores.
MORPHOTROPIESMORPHOTROPY n. the effect on crystalline form of the addition or substitution of an element or radical.
ORNITHOMORPHSornithomorphs n. Plural of ornithomorph.
ORNITHOMORPH n. a figure or design in the form of a bird.
ORTHOPTEROIDSorthopteroids n. Plural of orthopteroid.
ORTHOPTEROID n. a member of the Orthoptera, cockroaches.
ORTHOPYROXENEorthopyroxene n. (Mineralogy) Any pyroxene that forms orthorhombic crystals.
ORTHOPYROXENE n. a member of the pyroxene group of minerals having an orthorhombic crystal structure, such as enstatite and hypersthene.
ORTHOTROPISMSORTHOTROPISM n. vertical growth.
PHOTORECEPTORphotoreceptor n. (Biology) A specialized neuron or other structure able to detect and react to light.
PHOTORECEPTOR n. a receptor for light stimuli.
PROTOCHORDATEprotochordate n. Any chordate of the phyla Hemichordata, Urochordata or Cephalochordata.
PROTOCHORDATE n. a member of the Protochordata.
PROTOHISTORICprotohistoric adj. Of or pertaining to protohistory.
PROTOHISTORIC adj. relating to protohistory.
PROTOTROPHIESprototrophies n. Plural of prototrophy.
PROTOTROPHY n. the state of being prototrophic.
TAUROMORPHOUStauromorphous adj. Bull-shaped.
TAUROMORPHOUS adj. bull-shaped.
TROPHOTROPISMtrophotropism n. The movements of the organs in a growing plant, as towards nutrient substances, induced by the chemical…
TROPHOTROPISM n. direction of growth by nutritional 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 1Word.ws and WikWik.org.

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See this list for:

  • English Wiktionary: 74 words
  • Scrabble in French: 7 words
  • Scrabble in Spanish: 3 words
  • Scrabble in Italian: 4 words
  • Scrabble in German: no word
  • Scrabble in Romanian: 5 words


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