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List of 15-letter words containing

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There are 19 fifteen-letter words containing I, 2O, 2R, S, T and Y

CONTROVERSIALLYcontroversially adv. In a controversial manner.
CONTROVERSIAL adv. of, relating to, or arousing controversy.
CROSSOPTERYGIANcrossopterygian adj. (Zoology) Of or pertaining to the Crossopterygii, an infraclass of bony fish.
crossopterygian n. (Zoology) One of the Crossopterygii.
CROSSOPTERYGIAN n. a member of a subclass of mostly extinct bony fishes, including the coelacanth.
CRYPTOSPORIDIUMcryptosporidium n. Any protozoan of the genus Cryptosporidium, intestinal parasites of humans and other vertebrates that…
Cryptosporidium prop.n. A taxonomic genus within the family Cryptosporidiidae – coccidian protozoan parasites causing the disease…
CRYPTOSPORIDIUM n. any of a genus of protozoans parasitic in the gut of vertebrates including humans and sometimes causing diarrhea.
DEHYDRORETINOLSDEHYDRORETINOL n. vitamin A2.
DEMERITORIOUSLYDEMERITORIOUS adv. not meritorious.
DORSOVENTRALITYdorsoventrality n. Alternative form of dorsiventrality.
DORSOVENTRALITY n. the state of being dorsoventral.
ECTOMYCORRHIZASectomycorrhizas n. Plural of ectomycorrhiza.
ECTOMYCORRHIZA n. a type of mycorrhiza in which the fungus forms a layer on the outside of the roots of the plant.
ERYTHROPOIETINSerythropoietins n. Plural of erythropoietin.
ERYTHROPOIETIN n. a glycoprotein hormone that stimulates the production of red blood cells by stem cells in bone marrow.
HYDROCORTISONEShydrocortisones n. Plural of hydrocortisone.
HYDROCORTISONE n. a glucocorticoid hormone that is used to treat inflammatory and allergic conditions, aka cortisol.
HYSTRICOMORPHICHYSTRICOMORPHIC adj. belonging to the rodent suborder Hystricomorpha, which includes porcupines, cavies, agoutis, and chinchillas.
MICROPYROMETERSMICROPYROMETER n. a pyrometer for measuring the temperature of very small objects.
MICROSPOROCYTESmicrosporocytes n. Plural of microsporocyte.
MICROSPOROCYTE n. a microspore mother cell.
MYRISTICIVOROUSMYRISTICIVOROUS adj. feeding upon nutmegs.
ORNITHORHYNCHUSornithorhynchus n. A platypus (genus Ornithorhynchus).
Ornithorhynchus prop.n. A taxonomic genus within the family Ornithorhynchidae – the single species Ornithorhynchus anatinus…
ORNITHORHYNCHUS n. the duckbill platypus.
ORTHOPSYCHIATRYorthopsychiatry n. (Psychiatry) branch of psychiatry concerned with the prevention of mental illness, especially in the young.
ORTHOPSYCHIATRY n. preventive psychiatry for young people.
PORPHYROGENITESporphyrogenites n. Plural of porphyrogenite.
PORPHYROGENITE n. a Byzantine emperor's son, born in the purple.
PROCRASTINATORYprocrastinatory adj. Of or pertaining to procrastination.
PROCRASTINATORY adj. tending to procrastinate, also PROCRASTINATIVE.
PROTOPORPHYRINSprotoporphyrins n. Plural of protoporphyrin.
PROTOPORPHYRIN n. metal-free porphyrin derived from blood hemin.
ULTRAMICROSCOPYultramicroscopy n. The scientific use of the ultramicroscope.
ULTRAMICROSCOPY n. microscopy using an ultramicroscope.

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: 149 words
  • Scrabble in French: 12 words
  • Scrabble in Spanish: 6 words
  • Scrabble in Italian: no word
  • Scrabble in German: no word
  • Scrabble in Romanian: no word


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