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There are 20 twelve-letter words containing A, 2E, H, L, M, T and Y

CEPHALOMETRYcephalometry n. The measurement of the head, especially in order to study growth, development, and disease.
CEPHALOMETRY n. the science of measuring the head in living individuals.
DEMETHYLATEDdemethylated v. Simple past tense and past participle of demethylate.
demethylated adj. (Chemistry) That has been subjected to demethylation.
DEMETHYLATESdemethylates v. Third-person singular simple present indicative form of demethylate.
DIETHYLAMIDEdiethylamide n. (Organic chemistry) The derivative of a compound formed by adding an amide group with two ethyl substituents…
DIETHYLAMIDE n. as in lysergic acid diethylamide, LSD.
DIETHYLAMINEdiethylamine n. (Organic chemistry) The secondary amine (CH3CH2)2NH.
DIETHYLAMINE n. a liquid resembling ethylamine, derived from ammonia, with ethyl groups replacing two hydrogen atoms.
EPHEMERALITYephemerality n. (Uncountable) The state or condition of being ephemeral; transience.
ephemerality n. (Countable) Something that is ephemeral.
EPHEMERALITY n. the state of being ephemeral.
EXOTHERMALLYexothermally adv. In an exothermal manner.
EXOTHERMAL adv. of a chemical reaction, giving out heat, also EXOTHERMIC.
GEOTHERMALLYgeothermally adv. By geothermal means, especially by means of geothermal energy.
GEOTHERMAL adv. relating to the internal heat of the earth, also GEOTHERMIC.
HAEMATOLYSEShaematolyses n. Plural of haematolysis.
HAEMATOLYSIS n. breaking up of red blood corpuscles, also HEMATOLYSIS.
HEADMASTERLYheadmasterly adj. In a manner befitting a headmaster.
HEADMASTERLY adj. like a headmaster.
HEPATOMEGALYhepatomegaly n. (Pathology) An abnormal enlargement of the liver.
HEPATOMEGALY n. enlargement of the liver.
HERMETICALLYhermetically adv. With a hermetic seal; so as to be airtight.
hermetically adv. In a hermetic manner; isolatedly.
HERMETICAL adv. of or relating to sorcery or alchemy, also HERMETIC.
HYPERMUTABLEhypermutable adj. (Genetics) That mutates rapidly.
HYPERMUTABLE adj. excessively mutable.
HYPERTHERMALhyperthermal adj. Of, pertaining to, or causing hyperthermia.
hyperthermal n. (Geology) Any of several brief geological periods of global warming.
HYPERTHERMAL adj. suffering from hyperthermia.
MEALYMOUTHEDmealymouthed adj. Alternative form of mealy-mouthed.
mealy-mouthed adj. Prone to speaking evasively, indirectly, or duplicitously; not forthright.
MEALYMOUTHED adj. not plain and straightforward.
METALDEHYDESMETALDEHYDE n. a polymer of acetaldehyde.
METHACRYLATEmethacrylate n. (Organic chemistry) Any salt or ester of methacrylic acid, especially an ester used in the manufacture…
methacrylate n. A resin manufactured from methacrylic acid or a methacrylate.
METHACRYLATE n. a salt or ester of methacrylic acid.
METHYLAMINESmethylamines n. Plural of methylamine.
METHYLAMINE n. an inflammable gas, obtainable from herring brine.
MYELOPATHIESmyelopathies n. Plural of myelopathy.
MYELOPATHY n. a disease or disorder of the spinal cord or bone marrow.
NYCHTHEMERALnychthemeral adj. Lasting a nychthemeron (24 hours).
NYCHTHEMERAL adj. (Greek) of or relating to a nychthemeron or 24-hour period.

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: 86 words
  • Scrabble in French: 8 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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