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List of 12-letter words containing

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There are 14 twelve-letter words containing D, H, N, 2O and 2R

ADRENOCHROMEadrenochrome n. (Biochemistry) An oxidation product of adrenaline or epinephrine; its semicarbazone is used as a drug…
adrenochrome n. (Fiction) A fictional drug obtained from human adrenal glands.
ADRENOCHROME n. a mixture of quinones.
CHLOROHYDRINchlorohydrin n. (Organic chemistry) Any halohydrin in which the halogen is chlorine.
CHLOROHYDRIN n. any of various organic compounds derived from diols or polyhydroxy alcohols by substitution of chlorine for part of the hydroxyl groups.
CHONDROPHOREchondrophore n. Any hydrozoan of the former order Chondrophora (now included in order Anthoathecata).
CHONDROPHORE n. a medusoid hydrozoan that resembles a jellyfish.
DISHONOURERSdishonourers n. Plural of dishonourer.
DISHONOURER n. one who dishonours, also DISHONORER.
HARMONICHORDharmonichord n. (Music) A kind of upright piano whose strings are set in vibration not by the blow of the hammer but…
HARMONICHORD n. a keyboard instrument of violin tone, in which the strings are rubbed by rosined wheels.
HORRENDOUSLYhorrendously adv. In a horrendous manner.
HORRENDOUS adv. fearful; frightful.
HYDROCARBONShydrocarbons n. Plural of hydrocarbon.
HYDROCARBON n. a compound of hydrogen and carbon with nothing else, occurring notably in oil, natural gas and coal.
HYDROFORMINGhydroforming n. (Engineering) A cost-effective way of shaping malleable metals into lightweight, stiff pieces by means…
hydroforming n. (Organic chemistry) The reaction of petroleum with hydrogen.
HYDROFORMING n. the catalytic reforming of petroleum to increase the proportion of aromatic and branched-chain hydrocarbons.
HYDROGENATORhydrogenator n. (Chemistry) A device that hydrogenates.
HYDROGENATOR n. an agent that hydrogenates.
OVERHONOUREDOVERHONOUR v. to honour excessively, also OVERHONOR.
PYRITOHEDRONpyritohedron n. (Mathematics) An irregular dodecahedron, the faces of which are identical but irregular pentagons.
pyritohedron n. (Mineralogy) The shape of one of the crystal habits of pyrite.
PYRITOHEDRON n. a pentagonal dodecahedron.
RHODODENDRONrhododendron n. (Obsolete) Oleander (Nerium oleander).
rhododendron n. Any of various flowering shrubs in the genus Rhododendron, especially.
Rhododendron prop.n. A taxonomic genus within the family Ericaceae – rhododendrons and azaleas.
RHOMBOHEDRONrhombohedron n. A prism with six faces, each a rhombus.
RHOMBOHEDRON n. a parallelepiped whose faces are rhombuses.
UNROADWORTHYunroadworthy adj. Describing a vehicle which is not safe for use on the road.
UNROADWORTHY adj. not roadworthy.

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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