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There are 18 fifteen-letter words containing B, I, 2O, 2S and 2T

ABSORPTIOMETERSabsorptiometers n. Plural of absorptiometer.
ABSORPTIOMETER n. an instrument for measuring the solubility of gases in liquids.
ARCHEOBOTANISTSARCHEOBOTANIST n. one who studies archeobotany.
ASTROBIOLOGISTSastrobiologists n. Plural of astrobiologist.
ASTROBIOLOGIST n. one who studies astrobiology.
BACTERIOLOGISTSbacteriologists n. Plural of bacteriologist.
BACTERIOLOGIST n. one who studies bacteriology.
BIOASTRONAUTICSbioastronautics n. The study of the biological, behavioural and medical aspects of astronautics.
BIOASTRONAUTICS n. the science dealing with the effects of travel in space on living organisms.
BLOODTHIRSTIESTbloodthirstiest adj. Superlative form of bloodthirsty: most bloodthirsty.
BLOODTHIRSTY adj. eager for bloodshed.
ETHNOBIOLOGISTSethnobiologists n. Plural of ethnobiologist.
NONOBJECTIVISTSnonobjectivists n. Plural of nonobjectivist.
NONOBJECTIVIST n. a practitioner of nonobjective art.
OBSTRUCTIONISMSobstructionisms n. Plural of obstructionism.
OBSTRUCTIONISM n. deliberate interference with the progress or business esp. of a legislative body.
OBSTRUCTIONISTSobstructionists n. Plural of obstructionist.
OBSTRUCTIONIST n. someone, esp. a politician in a legislative assembly, who practises obstruction.
PALAEOBOTANISTSpalaeobotanists n. Plural of palaeobotanist.
PALAEOBOTANIST n. one who studies palaeobotany.
PHOTOBIOLOGISTSphotobiologists n. Plural of photobiologist.
PHOTOBIOLOGIST n. one who studies photobiology.
PROHIBITIONISTSprohibitionists n. Plural of prohibitionist.
PROHIBITIONIST n. one who favors prohibition.
RETINOBLASTOMASretinoblastomas n. Plural of retinoblastoma.
RETINOBLASTOMA n. a tumour of the retina.
STROBILISATIONSSTROBILISATION n. production or reproduction by strobilae, also STROBILIZATION.
STROBILIZATIONSstrobilizations n. Plural of strobilization.
STROBILIZATION n. production or reproduction by strobilae, also STROBILISATION.
SUBOPTIMISATIONsuboptimisation n. Alternative spelling of suboptimization.
SUBOPTIMISATION n. the process of suboptimising, also SUBOPTIMIZATION.
THROMBOPLASTINSthromboplastins n. Plural of thromboplastin.
THROMBOPLASTIN n. a complex enzyme found esp. in platelets that functions in the conversion of prothrombin into thrombin in the clotting of blood.

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: 107 words
  • Scrabble in French: 14 words
  • Scrabble in Spanish: 6 words
  • Scrabble in Italian: 20 words
  • Scrabble in German: no word
  • Scrabble in Romanian: 6 words


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