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There are 20 twelve-letter words containing A, C, H, M, O, P, R and T

ACTINOMORPHYactinomorphy n. The condition of being actinomorphic.
ACTINOMORPHY n. the quality of being actinomorphic.
APOCHROMATICapochromatic adj. (Optics) Corrected for both chromatic aberration and spherical aberration.
APOCHROMATIC adj. free from chromatic and spherical aberration.
ATMOSPHERICSatmospherics n. Radio interference caused by pulses of electromagnetic radiation in the atmosphere as the result of…
ATMOSPHERICS n. audible disturbances produced in radio receiving apparatus by atmospheric electrical phenomena (as lightning).
CAMPHORATINGcamphorating v. Present participle of camphorate.
CAMPHORATE v. to impregnate or treat with camphor.
CEPHALOMETERcephalometer n. An instrument for measuring the head.
cephalometer n. A device for positioning the head, and holding it steady, for an X-ray or surgery; a cephalostat.
CEPHALOMETER n. an instrument for positioning the human head for X-ray examination in cephalometry.
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.
CHEMOAUTROPHCHEMOAUTROPH n. any organism, e.g. bacteria, that produces energy by the oxidation of inorganic compounds, such as iron, ammonia and hydrogen sulphide, also CHEMOAUTOTROPH.
CHEMOTHERAPYchemotherapy n. (Medicine) Any chemical treatment intended to be therapeutic with respect to a disease state.
chemotherapy n. (Oncology, most common usage) chemical treatment to kill or halt the replication and/or spread of cancerous…
CHEMOTHERAPY n. therapy involving the use of chemicals.
CHROMATOPSIAchromatopsia n. A visual aberration in which objects appear abnormally coloured, such as xanthopsia or cyanopia.
CHROMATOPSIA n. coloured vision.
CHROMOPLASTSchromoplasts n. Plural of chromoplast.
CHROMOPLAST n. a colored plastid usually containing red or yellow pigment, such as carotene.
COMETOGRAPHYcometography n. A scientific description of comets.
COMETOGRAPHY n. the description of comets.
CRYMOTHERAPYCRYMOTHERAPY n. medical treatment using extreme cold, also CRYOTHERAPY.
GAMETOPHORICgametophoric adj. Relating to gametophores.
GAMETOPHORIC adj. of or like a gametophore, the part of a plant that bears the reproductive organs.
HYPONATREMIChyponatremic adj. (Biology, medicine) Exhibiting or relating to hyponatremia.
METAPHORICALmetaphorical adj. Pertaining to or characterized by a metaphor; figurative; symbolic.
METAPHORICAL adj. related to metaphor, also METAPHORIC.
MISANTHROPICmisanthropic adj. Disliking or hating mankind.
MISANTHROPIC adj. of, relating to, or characteristic of a misanthrope, also MISANTHROPICAL.
OVEREMPHATICoveremphatic adj. Excessively emphatic, particularly in musical or theatrical interpretation.
OVEREMPHATIC adj. excessively emphatic.
PANCHROMATICpanchromatic adj. (Photography, of black and white film) sensitive to all visible colours.
panchromatic adj. (Digital imaging) sensitive to a wide range of wavelengths of light, typically most of the visible spectrum.
PANCHROMATIC adj. of photographic film, sensitive to all colours.
RHAMPHOTHECArhamphotheca n. A thin horny sheath of keratin on the outer surface of a bird’s beak.
RHAMPHOTHECA n. the horny or leathery outer layer of a bird's bill.
TETRAMORPHICtetramorphic adj. Having four forms.
tetramorphic adj. Relating to a tetramorph.
TETRAMORPHIC adj. having four forms.

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: 104 words
  • Scrabble in French: 9 words
  • Scrabble in Spanish: 5 words
  • Scrabble in Italian: 15 words
  • Scrabble in German: no word
  • Scrabble in Romanian: 7 words


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