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There are 9 twelve-letter words containing I, 3O, R, S, T and Y

ASTROBIOLOGYastrobiology n. (Sciences) The study of life anywhere in the universe, including the Earth.
ASTROBIOLOGY n. exobiology.
BIOASTRONOMYbioastronomy n. Synonym of astrobiology.
BIOASTRONOMY n. the branch of biology which deals with the study or the discovery of life forms on other planets or in space.
HISTORIOLOGYhistoriology n. (Obsolete) a discourse on history.
HISTORIOLOGY n. the study of history.
LYOSORPTIONSLYOSORPTION n. the adsorption of a liquid on a solid surface, esp. of a solvent on suspended particles.
ORNITHOSCOPYornithoscopy n. Birdwatching.
ORNITHOSCOPY n. bird watching.
ORYCTOLOGIESORYCTOLOGY n. (obsolete) mineralogy or paleontology.
PROTISTOLOGYprotistology n. (Biology) The scientific study of protists.
PROTISTOLOGY n. the study of protists.
PROTOHISTORYprotohistory n. The period between prehistory and history, during which a culture or civilization has not yet developed…
PROTOHISTORY n. the study of human beings in the times that immediately antedate recorded history.
TROPOMYOSINStropomyosins n. Plural of tropomyosin.
TROPOMYOSIN n. a filamentous protein which controls the interaction of actin and myosin in muscle fibres.

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: 32 words
  • Scrabble in French: 4 words
  • Scrabble in Spanish: 1 word
  • Scrabble in Italian: no word
  • Scrabble in German: no word
  • Scrabble in Romanian: no word


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