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There are 14 fifteen-letter words containing A, E, 3R, 2T 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.
COUNTERIRRITANTcounterirritant n. (Pharmacology) Any substance used to cause inflammation in one part of the body with the goal of lessening…
COUNTERIRRITANT n. an agent applied locally to produce superficial inflammation with the object of reducing inflammation in deeper adjacent structures.
INFRASTRUCTURESinfrastructures n. Plural of infrastructure.
INFRASTRUCTURE n. the underlying foundation or basic framework (as of a system or organization).
MACROSTRUCTURESmacrostructures n. Plural of macrostructure.
MACROSTRUCTURE n. the structure (as of metal, a body part, or the soil) revealed by visual examination with little or no magnification.
PRETERNATURALLYpreternaturally adv. In a preternatural manner; beyond what could possibly be natural.
PRETERNATURAL adv. existing outside of nature.
QUARTERMISTRESSquartermistress n. A female quartermaster.
QUARTERMISTRESS n. a female quartermaster.
SUBTERRESTRIALSsubterrestrials n. Plural of subterrestrial.
SUBTERRESTRIAL n. a subterrestrial person or thing.
SUPERSTRUCTURALsuperstructural adj. Of or pertaining to superstructure.
SUPERSTRUCTURAL adj. relating to superstructure.
TETRAHYDROFURANtetrahydrofuran n. (Organic chemistry) A heterocyclic ether having a five-membered ring with four carbon atoms and one…
TETRAHYDROFURAN n. a flammable liquid ether derived from furan and used as a solvent and as an intermediate in organic synthesis.
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.
ULTRAMARATHONERultramarathoner n. (Athletics) Someone who participates in ultramarathons.
ULTRAMARATHONER n. one who runs an ultramarathon, a footrace longer than a marathon.
ULTRAMICROMETERultramicrometer n. A very precise micrometer.
ULTRAMICROMETER n. a micrometer for measuring extremely small distances.
ULTRASTRUCTURESultrastructures n. Plural of ultrastructure.
ULTRASTRUCTURE n. biological structure and esp. fine structure, as of a cell, not visible through an ordinary microscope.

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: 132 words
  • Scrabble in French: 84 words
  • Scrabble in Spanish: 27 words
  • Scrabble in Italian: 60 words
  • Scrabble in German: no word
  • Scrabble in Romanian: 147 words


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