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There are 20 thirteen-letter words containing A, C, I, M, O, P, R and U

AMPHITRICHOUSamphitrichous adj. (Biology) (of bacteria) Having a single flagellum on each of two opposite ends. (Only one flagellum…
AMPHITRICHOUS adj. of or like amphitricha, bacteria that have flagella at both ends.
CERULOPLASMINceruloplasmin n. (Biochemistry) A blue metalloprotein that contains copper; it acts as a ferroxidase in association with transferrin.
CERULOPLASMIN n. a blue copper-binding serum oxidase that is deficient in Wilson's disease.
COMPURGATIONScompurgations n. Plural of compurgation.
COMPURGATION n. the exoneration of an accused person on the basis of oaths sworn by other persons.
CUPRAMMONIUMScuprammoniums n. Plural of cuprammonium.
CUPRAMMONIUM n. a solution of cupric hydroxide in ammonia.
IMPORTUNACIESimportunacies n. Plural of importunacy.
IMPORTUNACY n. the state of being importunate.
MICROCAPSULESmicrocapsules n. Plural of microcapsule.
MICROCAPSULE n. a tiny capsule containing material (as an adhesive or a medicine) that is released when the capsule is broken.
MULTIPLICATORmultiplicator n. (Mathematics) Synonym of multiplier.
multiplicator n. (Mathematics) Schur multiplier.
MULTIPLICATOR n. a multiplier.
MUSICOTHERAPYmusicotherapy n. Music therapy; the use of music to improve health.
MUSICOTHERAPY n. therapy involving the use of music.
PARAMOUNTCIESparamountcies n. Plural of paramountcy.
PARAMOUNTCY n. the state of being paramount, also PARAMOUNCY.
PERIOSTRACUMSPERIOSTRACUM n. the horny outer layer of a mollusc's shell.
PNEUMOGASTRICpneumogastric adj. (Anatomy) Of or pertaining to the lungs and the stomach.
pneumogastric adj. (Anatomy) vagus (attributive).
pneumogastric n. (Anatomy) The pneumogastric nerve; one of the tenth pair of cranial nerves which are distributed to…
POCOCURANTISMpococurantism n. Indifference, nonchalance.
POCOCURANTISM n. indifference, also POCOCURANTEISM.
POSTTRAUMATICposttraumatic adj. After, or as a result of, a trauma.
post-traumatic adj. Alternative spelling of posttraumatic.
POSTTRAUMATIC adj. taking place after trauma.
PROTACTINIUMSPROTACTINIUM n. a radioactive metallic chemical element, a member of the actinide series which occurs as a decay product in uranium ores.
PROTOACTINIUMprotoactinium n. Dated form of protactinium.
PROTOACTINIUM n. a radioactive element that yields actinium on disintegration.
RECOMPUTATIONrecomputation n. The act, process or result of recomputing; recalculation.
RECOMPUTATION n. the act of recomputing.
SOMATOPLEURICsomatopleuric adj. (Embryology) Pertaining to the somatopleure; somatopleural.
SOMATOPLEURIC adj. of or like a somatopleure, also SOMATOPLEURAL.
SUPERROMANTICsuperromantic adj. Exceptionally romantic.
SUPERROMANTIC adj. extremely romantic.
UNIMPORTANCESUNIMPORTANCE n. lack of importance.
UNPROBLEMATICunproblematic adj. Not problematic (presenting problems) or not controversial.
UNPROBLEMATIC adj. not problematic.

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: 114 words
  • Scrabble in French: 28 words
  • Scrabble in Spanish: 117 words
  • Scrabble in Italian: 65 words
  • Scrabble in German: no word
  • Scrabble in Romanian: 121 words


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