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There are 18 thirteen-letter words containing I, M, 3O, R and 2S

CHONDRIOSOMESchondriosomes n. Plural of chondriosome.
CHONDRIOSOME n. an old name for a mitochondrion, a minute body generating ATP in the cytoplasm of a cell.
HOMOMORPHISMShomomorphisms n. Plural of homomorphism.
HOMOMORPHISM n. similarity of external form, appearance, or size.
HOMOMORPHOSIShomomorphosis n. (Biology) Regeneration in which the new part is like the part removed; replacement of a lost part by a similar part.
HOMOMORPHOSIS n. regeneration of a lost part in the original form.
ISOCHROMOSOMEisochromosome n. (Cytology) An abnormal chromosome in which one arm has been lost and replaced with an exact copy of the other arm.
ISOCHROMOSOME n. a chromosome produced by transverse splitting of the centromere so that both arms are from the same side of the centromere, are of equal length, and possess identical genes.
ISODIMORPHOUSisodimorphous adj. Having the quality of isodimorphism.
ISODIMORPHOUS adj. showing isodimorphism, isomorphism between each of the two forms of a dimorphous substance.
MICROCOSMOSESmicrocosmoses n. Plural of microcosmos.
MICROCOSMOS n. a little universe or world.
MONOCHROMISTSmonochromists n. Plural of monochromist.
MONOCHROMIST n. a person who practises monochrome.
MONOMORPHISMSmonomorphisms n. Plural of monomorphism.
MONOMORPHISM n. existence in one form only.
MONOSTROPHICSmonostrophics n. Plural of monostrophic.
MONOSTROPHICS n. monostrophic verses.
MORPHOLOGISTSmorphologists n. Plural of morphologist.
MORPHOLOGIST n. a student of morphology.
MOTORISATIONSmotorisations n. Plural of motorisation.
MOTORISATION n. the act of motorising, also MOTORIZATION.
NORMOTENSIONSNORMOTENSION n. normal blood pressure.
ORTHOTROPISMSORTHOTROPISM n. vertical growth.
OVARIOTOMISTSovariotomists n. Plural of ovariotomist.
OVARIOTOMIST n. one who carries out ovariotomies.
PHOTOTROPISMSphototropisms n. Plural of phototropism.
PHOTOTROPISM n. movement directed by light.
POLYRIBOSOMESpolyribosomes n. Plural of polyribosome.
POLYRIBOSOME n. a cluster of ribosomes linked together by a molecule of messenger RNA and forming the site of protein synthesis.
SOMATOTROPINSsomatotropins n. Plural of somatotropin.
SOMATOTROPIN n. a polypeptide growth hormone, also SOMATOTROPHIN, SOMATOTROPINE.
TOPOISOMERASEtopoisomerase n. (Biochemistry) Any of several enzymes that affect the topology of DNA, especially ones that relax supercoiling.
TOPOISOMERASE n. any of a class of enzymes that reduce supercoiling in DNA by breaking and rejoining one or both strands of the DNA molecule.

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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See this list for:

  • English Wiktionary: 84 words
  • Scrabble in French: 26 words
  • Scrabble in Spanish: 73 words
  • Scrabble in Italian: 81 words
  • Scrabble in German: no word
  • Scrabble in Romanian: 20 words


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