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There are 20 fifteen-letter words containing H, 2I, 2O, 2R and T

ALLOTRIOMORPHICallotriomorphic adj. (Chemistry) allotropic.
allotriomorphic adj. (Geology) xenomorphic.
ALLOTRIOMORPHIC adj. crystalline in internal structure but not in outward form.
CORTICOTROPHINScorticotrophins n. Plural of corticotrophin.
CORTICOTROPHIN n. a hormone that stimulates the adrenal gland, also CORTICOTROPIN.
ERYTHROPOIETINSerythropoietins n. Plural of erythropoietin.
ERYTHROPOIETIN n. a glycoprotein hormone that stimulates the production of red blood cells by stem cells in bone marrow.
HISTORIOGRAPHERhistoriographer n. A scholar who studies historiography.
HISTORIOGRAPHER n. one who practises historiography, the study of writing history.
HISTORIOGRAPHIChistoriographic adj. Relating to the writing of history.
historiographic adj. Relating to the study and practice of historical scholarship.
HISTORIOGRAPHIC adj. relating to historiography.
HYSTRICOMORPHICHYSTRICOMORPHIC adj. belonging to the rodent suborder Hystricomorpha, which includes porcupines, cavies, agoutis, and chinchillas.
OSTEOARTHRITICSosteoarthritics n. Plural of osteoarthritic.
OSTEOARTHRITIC n. one suffering from osteoarthritis.
PARAHELIOTROPICparaheliotropic adj. Relating to paraheliotropism.
PARAHELIOTROPIC adj. turning edgewise to the light.
PROBATIONERSHIPprobationership n. The state of being a probationer; novitiate.
PROBATIONERSHIP n. the state of being a probationer.
PROGENITORSHIPSprogenitorships n. Plural of progenitorship.
PROGENITORSHIP n. the state of being a progenitor.
PROPRIETORSHIPSproprietorships n. Plural of proprietorship.
PROPRIETORSHIP n. the office of proprietor.
PROTOHISTORIANSprotohistorians n. Plural of protohistorian.
PROTOHISTORIAN n. one who studies protohistory.
REAUTHORISATIONreauthorisation n. Alternative form of reauthorization.
REAUTHORISATION n. the process of reauthorising, also REAUTHORIZATION.
REAUTHORIZATIONreauthorization n. A second or subsequent authorization.
reauthorization n. A renewal of an authorization.
REAUTHORIZATION n. the process of reauthorizing, also REAUTHORISATION.
RETHEORIZATIONSretheorizations n. Plural of retheorization.
THERIOMORPHISMStheriomorphisms n. Plural of theriomorphism.
THERIOMORPHISM n. the belief that gods exist in animal form.
THERIOMORPHOSISTHERIOMORPHOSIS n. transformation into a beast.
THERMOPERIODISMthermoperiodism n. The property of being thermoperiodic.
THERMOPERIODISM n. the effect on an organism of rhythmic temperature variations.
TRICHLOROACETICtrichloroacetic adj. Of or pertaining to trichloroacetic acid or its derivatives.
TRICHLOROACETIC adj. as in trichloroacetic acid.
TRINITROPHENOLSTRINITROPHENOL n. a similar derivative of phenol, esp. picric acid.

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: 175 words
  • Scrabble in French: 22 words
  • Scrabble in Spanish: 14 words
  • Scrabble in Italian: 36 words
  • Scrabble in German: no word
  • Scrabble in Romanian: 149 words


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