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There are 20 fifteen-letter words containing A, E, 3L, O, S and T

ALLOTETRAPLOIDSallotetraploids n. Plural of allotetraploid.
ALLOTETRAPLOID n. an organism having a diploid set of chromosomes from each of its parent.
COLLATERALISINGcollateralising v. Present participle of collateralise.
COLLATERALISE v. to make (a loan) secure with collateral, also COLLATERALIZE.
COLLATERALITIEScollateralities n. Plural of collaterality.
COLLATERALITY n. the quality of being collateral.
COLLOQUIALITIEScolloquialities n. Plural of colloquiality.
COLLOQUIALITY n. the quality of being colloquial.
CONSTELLATIONALconstellational adj. Of or relating to the constellations.
CONSTELLATIONAL adj. of or like a constellation.
DINOFLAGELLATESdinoflagellates n. Plural of dinoflagellate.
DINOFLAGELLATE n. a kind of marine protozoan, one of the principal constituents of plankton.
DYSTELEOLOGICALdysteleological adj. Of or pertaining to dysteleology.
DYSTELEOLOGICAL adj. related to dysteleology, the study of functionless rudimentary organs in animals and plants.
HEMOFLAGELLATEShemoflagellates n. Plural of hemoflagellate.
HEMOFLAGELLATE n. a flagellate (as a trypanosome) that is a blood parasite, also HAEMOFLAGELLATE.
HOLOCRYSTALLINEholocrystalline adj. (Mineralogy) Completely crystalline; said of a rock like granite, all of whose constituents are crystalline.
HOLOCRYSTALLINE adj. wholly crystalline in structure, without glass.
ILLEGALISATIONSillegalisations n. Plural of illegalisation.
ILLEGALISATION n. the process of illegalising, also ILLEGALIZATION.
ILLEGALIZATIONSillegalizations n. Plural of illegalization.
ILLEGALIZATION n. the process of illegalizing, also ILLEGALISATION.
LAMELLIROSTRATELAMELLIROSTRATE adj. having transverse lamellae within the edge of the bill, also LAMELLIROSTRAL.
MEDULLOBLASTOMAmedulloblastoma n. (Oncology) A malignant type of brain tumour that originates in the cerebellum.
MEDULLOBLASTOMA n. a malignant tumor of the central nervous system arising in the cerebellum esp. in children.
MEROBLASTICALLYmeroblastically adv. In a meroblastic manner.
MEROBLASTIC adv. undergoing or involving cleavage in part of the egg surface only, due to a large amount of yolk elsewhere.
MUSCULOSKELETALmusculoskeletal adj. Of, or relating to both muscles and the skeleton.
MUSCULOSKELETAL adj. of, relating to, or involving both musculature and skeleton.
NEOLOGISTICALLYneologistically adv. In a neologistic manner.
NEOLOGISTICAL adv. relating to neologism, also NEOLOGISTIC.
PHYLLOSILICATESphyllosilicates n. Plural of phyllosilicate.
PHYLLOSILICATE n. any of a class of silicate minerals, including talc, consisting of thin sheets.
POLYCRYSTALLINEpolycrystalline adj. Composed of an aggregate of very small crystals in random orientations.
POLYCRYSTALLINE adj. consisting of crystals variously oriented.
POSTMILLENNIALSPost-Millennials prop.n. Synonym of Generation Z.
STEREOLOGICALLYstereologically adv. By means of, or in terms of, stereology.
STEREOLOGICAL adv. relating to stereology.

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: 152 words
  • Scrabble in French: 21 words
  • Scrabble in Spanish: 20 words
  • Scrabble in Italian: 37 words
  • Scrabble in German: no word
  • Scrabble in Romanian: 23 words


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