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List of 13-letter words containing

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There are 7 thirteen-letter words containing E, H, L, R, T and 2Y

BUTYRALDEHYDEbutyraldehyde n. (Organic chemistry) The aliphatic aldehyde CH3-CH2-CH2-CHO derived from butane.
BUTYRALDEHYDE n. either of two aldehydes used esp. in making synthetic resins.
HYPERMOBILITYhypermobility n. An excess amount of elasticity in a bodily joint.
HYPERMOBILITY n. extreme mobility.
HYPERSALINITYhypersalinity n. Abnormally high salinity.
HYPERSALINITY n. excessive salinity.
HYPERVELOCITYhypervelocity adj. Having, or occurring at, extreme velocity.
hypervelocity n. A very high velocity.
hypervelocity n. A hypersonic velocity.
METHYLMERCURYmethylmercury n. (Chemical compound) The organometallic cation CH3Hg+; it is a toxicant that accumulates in the environment…
methyl␣mercury n. Alternative spelling of methylmercury.
METHYLMERCURY n. any of several extremely toxic organometallic compounds formed from metallic mercury by the action of microorganisms.
PTERYLOGRAPHYpterylography n. (Zoology) The study or description of the arrangement of feathers, or of the pterylae, of birds.
PTERYLOGRAPHY n. a description of pterylae.
PYROPHYLLITESpyrophyllites n. Plural of pyrophyllite.
PYROPHYLLITE n. a silvery-white to pale-green aluminum silicate.

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: 68 words
  • Scrabble in French: 6 words
  • Scrabble in Spanish: no word
  • Scrabble in Italian: no word
  • Scrabble in German: no word
  • Scrabble in Romanian: no word


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