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 There are 14 thirteen-letter words containing A, C, 2E, O and 2U| AEROSTRUCTURE | • aerostructure n. Any component or subsystem of the airframe of an aircraft. • AEROSTRUCTURE n. any separately manufactured unit, component, or section of an aircraft or other vehicle capable of flight.
 |  | CETEOSAURUSES | • CETEOSAURUS n. a large Jurassic dinosaur. |  | COUNTERARGUED | • counterargued v. Simple past tense and past participle of counterargue. • COUNTERARGUE v. to argue against.
 |  | COUNTERARGUES | • counterargues v. Third-person singular simple present indicative form of counterargue. • COUNTERARGUE v. to argue against.
 |  | EQUIMOLECULAR | • equimolecular adj. (Chemistry) Containing the same number of molecules (of two or more compounds). • EQUIMOLECULAR adj. of substances, solutions, etc., containing equal numbers of molecules.
 |  | EQUISETACEOUS | • equisetaceous adj. (Botany) Belonging to the Equisetaceae, or horsetails. • EQUISETACEOUS adj. pertaining to the horsetail family.
 |  | FRUMENTACEOUS | • frumentaceous adj. Resembling or pertaining to grain, especially wheat. • FRUMENTACEOUS adj. resembling wheat or other grain.
 |  | MOUNTENAUNCES | • MOUNTENAUNCE n. (Spenser) amount; distance, also MOUNTENANCE. |  | OUTRECUIDANCE | • outrecuidance n. (Archaic) Presumption, arrogance, self-conceit. • OUTRECUIDANCE n. (Scott) presumption or overweening.
 |  | RAUCOUSNESSES | • raucousnesses n. Plural of raucousness. • RAUCOUSNESS n. the state of being raucous.
 |  | SUPRAMOLECULE | • supramolecule n. (Chemistry) Any organized system of two or more molecules held together by intermolecular forces. • SUPRAMOLECULE n. a cluster of molecules, usually created artificially.
 |  | UNCONQUERABLE | • unconquerable adj. Not conquerable; indomitable. • UNCONQUERABLE adj. incapable of being conquered.
 |  | UNEQUIVOCABLE | • unequivocable adj. (Proscribed) Nonstandard form of unequivocal. • UNEQUIVOCABLE adj. leaving no doubt, also UNEQUIVOCAL.
 |  | VACUOUSNESSES | • VACUOUSNESS n. the state of being vacuous. | 
 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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