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There are 18 fifteen-letter words containing A, 3O, 2R, S and T

ARCHEOASTRONOMYarcheoastronomy n. Alternative spelling of archaeastronomy.
ARCHEOASTRONOMY n. the scientific study of the beliefs and practices concerning astronomy that existed in ancient and prehistoric civilizations.
ASTROPHOTOGRAPHastrophotograph n. Alternative form of astrophoto.
ASTROPHOTOGRAPH n. a photograph of a celestial body.
BRONCHODILATORSbronchodilators n. Plural of bronchodilator.
BRONCHODILATOR n. a drug that relaxes bronchial muscle resulting in expansion of the bronchial air passages.
CHROMATOPHOROUSCHROMATOPHOROUS adj. of or like a chromatophore, a pigment-bearing cell.
COUNTERPROPOSALcounterproposal n. A proposal made as an alternative to another, earlier proposal.
counter-proposal n. Alternative form of counterproposal.
COUNTERPROPOSAL n. a return proposal made by one who has rejected a proposal.
DEXTROROTATIONSdextrorotations n. Plural of dextrorotation.
DEXTROROTATION n. rotation to the right.
DISPROPORTIONALdisproportional adj. Disproportionate.
DISPROPORTIONAL adj. relating to disproportion.
FOREORDINATIONSforeordinations n. Plural of foreordination.
FOREORDINATION n. the act of foreordaining.
NONCORRELATIONSnoncorrelations n. Plural of noncorrelation.
NONCORRELATION n. a lack of correlation.
ORTHOCHROMATISMorthochromatism n. Quality of being orthochromatic.
ORTHOCHROMATISM n. the state of being orthochromatic, of photographic film, sensitive to all colours except red.
OVERDECORATIONSoverdecorations n. Plural of overdecoration.
OVERDECORATION n. excessively decoration.
PHOTOTRANSISTORphototransistor n. (Electronics) Any semiconductor device whose electrical characteristics are light-sensitive.
PHOTOTRANSISTOR n. a junction transistor, whose base signal is generated by illumination of the base.
PROGNOSTICATORSprognosticators n. Plural of prognosticator.
PROGNOSTICATOR n. one who prognosticates.
PROTHONOTARIATSprothonotariats n. Plural of prothonotariat.
PROTHONOTARIAT n. the college constituted by the twelve apostolical prothonotaries (bishops and senior members of the curia) in Rome, also PROTONOTARIAT.
PROTOCERATOPSESSorry, definition not available.
PROTOHISTORIANSprotohistorians n. Plural of protohistorian.
PROTOHISTORIAN n. one who studies protohistory.
PYROPHOTOGRAPHSPYROPHOTOGRAPH n. a burnt-in photograph, e.g. on glass or porcelain.
VASOCONSTRICTORvasoconstrictor n. (Pharmacology) Any substance that causes vasoconstriction.
VASOCONSTRICTOR n. an agent (as a sympathetic nerve fiber or a drug) that induces or initiates vasoconstriction.

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: 218 words
  • Scrabble in French: 26 words
  • Scrabble in Spanish: 99 words
  • Scrabble in Italian: 134 words
  • Scrabble in German: no word
  • Scrabble in Romanian: 177 words


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