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There are 18 twelve-letter words containing A, E, H, L, M, O, R and Y

AMPELOGRAPHYampelography n. (Botany) The discipline within botany concerned with the taxonomy of cultivars in the grapevine genus, Vitis.
AMPELOGRAPHY n. the study of grapevines.
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.
CHLORENCHYMAchlorenchyma n. (Botany) A mechanical, supportive ground tissue in plants containing chloroplasts.
CHLORENCHYMA n. plant stem tissue containing chlorophyll.
EXOTHERMALLYexothermally adv. In an exothermal manner.
EXOTHERMAL adv. of a chemical reaction, giving out heat, also EXOTHERMIC.
FORMALDEHYDEformaldehyde n. (Organic chemistry) The simplest aldehyde, HCHO, a colourless gas that has many industrial applications;…
FORMALDEHYDE n. a formic aldehyde, formalin.
GEOTHERMALLYgeothermally adv. By geothermal means, especially by means of geothermal energy.
GEOTHERMAL adv. relating to the internal heat of the earth, also GEOTHERMIC.
HAEMATOCRYALhaematocryal adj. (Zoology) cold-blooded.
HAEMATOCRYAL adj. of all animals except birds and mammals, having a body temperature that varies with the temperature of the surroundings, also HEMATOCRYAL.
HEMODIALYZERhemodialyzer n. Something that performs hemodialysis.
HEMODIALYZER n. an artificial kidney.
HOLIDAYMAKERholidaymaker n. (Britain) someone who is on holiday.
holiday-maker n. (Britain) Someone who is on holiday.
HOLIDAYMAKER n. someone on holiday.
HYDROTHERMALhydrothermal adj. Of, or relating to hot water.
hydrothermal adj. (Geology) Of or relating to emanations of hot water that are rich in minerals, or to the rocks formed from them.
HYDROTHERMAL adj. designating naturally hot underground water that has geological effects.
ISOTHERMALLYisothermally adv. In an isothermal manner; at constant temperature.
ISOTHERMAL adv. having an equal average temperature.
LACHRYMOSELYlachrymosely adv. In a lachrymose manner.
LACHRYMOSE adv. shedding tears.
LAMPROPHYRESlamprophyres n. Plural of lamprophyre.
LAMPROPHYRE n. a compact intrusive rock with phenocrysts of black mica, hornblende, etc.
MACROCEPHALYmacrocephaly n. (Medicine) A condition in which the head is abnormally large.
macrocephaly n. (Geography) The excessive concentration of population and development in a single centre, to the detriment…
MACROCEPHALY n. largeness, or abnormal largeness, of the head.
MICROCEPHALYmicrocephaly n. A neurological disorder in which the person affected has an abnormally small head due to a failure of brain growth.
MICROCEPHALY n. the state of having a small head.
PYROCHEMICALpyrochemical adj. (Chemistry) Of, related to, or produced by chemical reactions at elevated temperatures.
PYROCHEMICAL adj. relating to chemical changes at high temperatures.
RHEUMATOLOGYrheumatology n. (Medicine) The branch of medicine specializing in arthritis and other ailments of the joints.
RHEUMATOLOGY n. the study of rheumatism.
YELLOWHAMMERyellowhammer n. A passerine bird, Emberiza citrinella, of western Eurasia, which is mainly yellow in colour.
yellowhammer n. (US) The northern flicker, Colaptes auratus.
yellowhammer n. A native or resident of the American state of Alabama.

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: 93 words
  • Scrabble in French: 8 words
  • Scrabble in Spanish: no word
  • Scrabble in Italian: no word
  • Scrabble in German: no word
  • Scrabble in Romanian: 1 word


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