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List of 12-letter words containing

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There are 18 twelve-letter words containing A, C, M, O, S and 2U

ACCUMULATORSaccumulators n. Plural of accumulator.
ACCUMULATOR n. a thing or person that accumulates.
AMPULLACEOUSampullaceous adj. Shaped like a swollen bottle.
AMPULLACEOUS adj. of or like an ampulla, also AMPULLACEAL.
CALUMNIOUSLYcalumniously adv. In the manner of a falsification intended to discredit another.
CALUMNIOUS adv. containing or implying calumny; as, calumnious reports.
COLUMBARIUMScolumbariums n. Plural of columbarium.
CONTUMACIOUScontumacious adj. Contemptuous of authority; willfully disobedient; rebellious.
contumacious adj. (Law) Willfully disobedient to the summons or orders of a court.
CONTUMACIOUS adj. stubbornly disobedient, rebellious.
CUMULOSTRATIcumulostrati n. Plural of cumulostratus.
CUMULOSTRATUS n. a type of cloud.
GLAUCOMATOUSglaucomatous adj. Having the nature of glaucoma.
GLAUCOMATOUS adj. affected by glaucoma.
MACRONUCLEUSmacronucleus n. (Biology) The larger of the two nuclei present in ciliate protozoans; it controls the nonreproductive…
MACRONUCLEUS n. a relatively large densely staining nucleus of most ciliate protozoans that is derived from micronuclei and controls various nonreproductive functions.
MIRACULOUSLYmiraculously adv. In a miraculous manner.
MIRACULOUS adv. of the nature of a miracle.
MUCILAGINOUSmucilaginous adj. Of, pertaining to, or resembling mucus; slimy and viscous.
MUCILAGINOUS adj. sticky, viscid.
MUSCULATIONSmusculations n. Plural of musculation.
MUSCULATION n. muscular action; musculature.
PLUMULACEOUSplumulaceous adj. (Zoology, ornithology) Downy; bearing down.
PLUMULACEOUS adj. of or like plumulae, little feathers.
PRIMULACEOUSprimulaceous adj. (Botany) Characteristic of the primrose and other plants of the order Primulaceae.
PRIMULACEOUS adj. belonging to the Primula family.
RAMBUNCTIOUSrambunctious adj. (Chiefly US, informal) Boisterous, energetic, noisy, and difficult to control.
RAMBUNCTIOUS adj. marked by uncontrollable exuberance, unruly, also RUMBUNCTIOUS.
STRATOCUMULIstratocumuli n. Plural of stratocumulus.
STRATOCUMULUS n. a type of long, wide, low-lying cloud with massive, rounded summits.
TUBERCULOMAStuberculomas n. Plural of tuberculoma.
TUBERCULOMA n. a slow-growing, circumscribed tuberculous lesion.
UNACCUSTOMEDunaccustomed adj. Not used to an event or thing, not accustomed.
unaccustomed v. Simple past tense and past participle of unaccustom.
UNACCUSTOMED adj. not customary.
UNMIRACULOUSunmiraculous adj. Not miraculous; commonplace, mundane.
UNMIRACULOUS adj. not miraculous.

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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