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There are 14 thirteen-letter words containing H, 3O, 2R, S and T

ARTHROSPOROUSarthrosporous adj. Relating to arthrospores.
ARTHROSPOROUS adj. of or like an arthrospore, also ARTHROSPORIC.
CHLOROFORMISTchloroformist n. (Medicine, archaic) One who uses chloroform as an anaesthetic.
CHLOROFORMIST n. one who administers chloroform.
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.
MOUTHBROODERSmouthbrooders n. Plural of mouthbrooder.
MOUTHBROODER n. a cichlid fish that carries its young in its mouth for protection, also MOUTHBREEDER.
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.
ORTHOTROPISMSORTHOTROPISM n. vertical growth.
PROTOHISTORICprotohistoric adj. Of or pertaining to protohistory.
PROTOHISTORIC adj. relating to protohistory.
PROTOTROPHIESprototrophies n. Plural of prototrophy.
PROTOTROPHY n. the state of being prototrophic.
RHODOCHROSITErhodochrosite n. (Mineralogy) A crystalline mineral composed mainly of manganese carbonate MnCO3.
RHODOCHROSITE n. manganese ore.
TAUROMORPHOUStauromorphous adj. Bull-shaped.
TAUROMORPHOUS adj. bull-shaped.
THOROUGHWORTSthoroughworts n. Plural of thoroughwort.
THOROUGHWORT n. a wild flower with perfoliate leaves.
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: 82 words
  • Scrabble in French: 10 words
  • Scrabble in Spanish: 8 words
  • Scrabble in Italian: 4 words
  • Scrabble in German: no word
  • Scrabble in Romanian: 5 words


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