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There are 15 twelve-letter words containing A, M, 3O, R, S and T

BIOASTRONOMYbioastronomy n. Synonym of astrobiology.
BIOASTRONOMY n. the branch of biology which deals with the study or the discovery of life forms on other planets or in space.
MONOCHROMATSmonochromats n. Plural of monochromat.
MONOCHROMAT n. a person who sees all colours as different shades of a single colour, also MONOCHROMATE.
MOTORBOATERSmotorboaters n. Plural of motorboater.
MOTORBOATER n. one who drives a motorboat.
MOTORCOACHESmotorcoaches n. Plural of motorcoach.
motor-coaches n. Plural of motor-coach.
motor␣coaches n. Plural of motor coach.
MOTORISATIONmotorisation n. Alternative spelling of motorization.
MOTORISATION n. the act of motorising, also MOTORIZATION.
OMMATOPHORESommatophores n. Plural of ommatophore.
OMMATOPHORE n. an eyestalk, as in snails.
OSTEOSARCOMAosteosarcoma n. A type of cancer of the bone.
OSTEOSARCOMA n. a malignant tumour derived from osteoblasts, composed of bone and sarcoma cells.
OVARIOTOMIESovariotomies n. Plural of ovariotomy.
OVARIOTOMY n. the operation of removing one or both of the ovaries, aka oophorectomy.
OVARIOTOMISTovariotomist n. (Surgery, now historical) Someone who performs a ovariotomy.
OVARIOTOMIST n. one who carries out ovariotomies.
RODOMONTADESrodomontades n. Plural of rodomontade.
RODOMONTADE n. (French) a bragging speech; vain boasting or bluster.
SEROTAXONOMYSEROTAXONOMY n. serological analysis as a source of information for taxonomic classification.
SOMATOTROPICsomatotropic adj. (Physiology) That stimulates body growth.
SOMATOTROPIC adj. promoting bodily growth, also SOMATOTROPHIC.
SOMATOTROPINsomatotropin n. (Biology, medicine) Synonym of growth hormone.
SOMATOTROPIN n. a polypeptide growth hormone, also SOMATOTROPHIN, SOMATOTROPINE.
SPERMATOZOONspermatozoon n. (Cytology) A reproductive cell or gamete of a male, carried in semen, that fertilizes an ovum to produce a zygote.
spermatozoön n. Alternative spelling of spermatozoon.
SPERMATOZOON n. a male sexual cell, which fertilises the egg, also SPERMATOZOAN.
THORACOSTOMYthoracostomy n. Incision into the chest wall, with maintenance of the opening for drainage.
THORACOSTOMY n. the construction of an artificial opening in the chest, usually to draw off fluid or release a buildup of air.

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: 63 words
  • Scrabble in French: 12 words
  • Scrabble in Spanish: 96 words
  • Scrabble in Italian: 78 words
  • Scrabble in German: no word
  • Scrabble in Romanian: 30 words


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