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There are 14 fifteen-letter words containing A, 2O, 2R, 2T and U

AUTOCORRELATIONautocorrelation n. (Statistics, signal processing) The cross-correlation of a signal with itself: the correlation between…
AUTOCORRELATION n. the correlation between paired values of a function of a mathematical or statistical variable taken at usually constant intervals that indicates the degree of periodicity of the function.
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.
COUNTERREACTIONcounterreaction n. An action taken in response to a prior reaction.
COUNTERREACTION n. a reaction in opposition to another reaction.
NORTHCOUNTRYMANnorth␣countryman n. Someone from the north of England.
NORTHCOUNTRYMAN n. one living in the north.
OVERSATURATIONSoversaturations n. Plural of oversaturation.
OVERSATURATION n. excessive saturation.
PROTOSPATHARIUSprotospatharius n. Alternative form of protospatharios.
PROTOSPATHARIUS n. (historical) the captain of the guards at Byzantium, also PROTOSPATAIRE, PROTOSPATHAIRE.
RADIOSTRONTIUMSradiostrontiums n. Plural of radiostrontium.
RADIOSTRONTIUM n. a radioactive isotope of strontium, esp. strontium-90.
REAUTHORISATIONreauthorisation n. Alternative form of reauthorization.
REAUTHORISATION n. the process of reauthorising, also REAUTHORIZATION.
REAUTHORIZATIONreauthorization n. A second or subsequent authorization.
reauthorization n. A renewal of an authorization.
REAUTHORIZATION n. the process of reauthorizing, also REAUTHORISATION.
THERMOREGULATORthermoregulator n. Any organism that carries out thermoregulation.
thermoregulator n. A device that assists with thermoregulation, e.g. for a newborn infant.
THERMOREGULATOR n. a device, such as a thermostat, for the regulation of temperature.
TURBOGENERATORSturbogenerators n. Plural of turbogenerator.
turbo-generators n. Plural of turbo-generator.
TURBOGENERATOR n. an electric generator driven by a turbine.
ULTRAMICROTOMESultramicrotomes n. Plural of ultramicrotome.
ULTRAMICROTOME n. a microtome for cutting extremely thin sections for electron microscopy.
UNPROPORTIONATEunproportionate adj. Not proportionate; disproportionate.
UNPROPORTIONATE adj. not proportionate.
WATERCOLOURISTSwatercolourists n. Plural of watercolourist.
WATERCOLOURIST n. an artist who works with watercolour, also WATERCOLORIST.

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: 151 words
  • Scrabble in French: 34 words
  • Scrabble in Spanish: 13 words
  • Scrabble in Italian: 67 words
  • Scrabble in German: no word
  • Scrabble in Romanian: 227 words


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