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There are 15 fifteen-letter words containing A, M, 2O, 2R, S and U

AUTOTRANSFORMERautotransformer n. (Electrical engineering) A transformer with a single winding, its output being taken from taps.
AUTOTRANSFORMER n. a transformer in which the primary and secondary coils have part or all of their turns in common.
CHONDROCRANIUMSCHONDROCRANIUM n. the cartilaginous parts of an embryonic cranium.
CHROMATOPHOROUSCHROMATOPHOROUS adj. of or like a chromatophore, a pigment-bearing cell.
CIRCUMFORANEOUScircumforaneous adj. Wandering from place to place or market to market.
circumforaneous adj. (By extension) Indirect, roundabout, or unnecessarily complex.
CIRCUMFORANEOUS adj. wandering about as from market to market, vagrant, also CIRCUMFORANEAN.
CONGLOMERATEURSconglomerateurs n. Plural of conglomerateur.
CONGLOMERATEUR n. a person who forms or heads a conglomerate.
CONSERVATORIUMSconservatoriums n. Plural of conservatorium.
CONSERVATORIUM n. (Latin) a school of music, also CONSERVATOIRE.
FORMULARISATIONformularisation n. Alternative spelling of formularization.
FORMULARISATION n. the act of formularising, also FORMULARIZATION.
MACROSPORANGIUMmacrosporangium n. (Botany) A megasporangium; sporangium or conceptacle containing only large spores; opposed to microsporangium.
MACROSPORANGIUM n. a sporangium producing only megaspores.
MICROSPORANGIUMmicrosporangium n. (Botany) A case, capsule or container that holds microspores.
MICROSPORANGIUM n. the sporangium in heterosporous plants where the microspores develop.
OVERGLAMOURIZESSorry, definition not available.
RADIOSTRONTIUMSradiostrontiums n. Plural of radiostrontium.
RADIOSTRONTIUM n. a radioactive isotope of strontium, esp. strontium-90.
SCLERODERMATOUSsclerodermatous adj. Relating to, or exhibiting, scleroderma.
SCLERODERMATOUS adj. hard-skinned; having bony armour.
ULTRAMICROSCOPEultramicroscope n. A microscope that uses bright illumination against a black background to view small particles.
ULTRAMICROSCOPE n. an instrument for viewing extremely small objects.
ULTRAMICROSCOPYultramicroscopy n. The scientific use of the ultramicroscope.
ULTRAMICROSCOPY n. microscopy using an ultramicroscope.
ULTRAMICROTOMESultramicrotomes n. Plural of ultramicrotome.
ULTRAMICROTOME n. a microtome for cutting extremely thin sections for electron microscopy.

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: 139 words
  • Scrabble in French: 26 words
  • Scrabble in Spanish: 126 words
  • Scrabble in Italian: 42 words
  • Scrabble in German: no word
  • Scrabble in Romanian: 51 words


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