List of 12-letter words containing ••••••

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There are 17 twelve-letter words containing H, 2O, 2R, S and Y

BOROHYDRIDES	• borohydrides n. Plural of borohydride. • BOROHYDRIDE n. a compound of boron and hydrogen, used as a reducing agent.
CHLORPYRIFOS	• chlorpyrifos n. A crystalline organophosphate insecticide that inhibits acetylcholinesterase.[diethoxy-sulfanylidene-(3,5,6-trichloropy…
CRYOPHORUSES	• cryophoruses n. Plural of cryophorus. • CRYOPHORUS n. an instrument for showing the decrease in the temperature of water by its evaporation.
HORRENDOUSLY	• horrendously adv. In a horrendous manner. • HORRENDOUS adv. fearful; frightful.
HYDROCARBONS	• hydrocarbons n. Plural of hydrocarbon. • HYDROCARBON n. a compound of hydrogen and carbon with nothing else, occurring notably in oil, natural gas and coal.
HYDROMETEORS	• hydrometeors n. Plural of hydrometeor. • HYDROMETEOR n. a general term for the aqueous phenomena of the atmosphere, as rain, snow, sleet, hail.
HYDROTROPISM	• hydrotropism n. (Biology) The movement of a plant (or other organism) in response to water, either towards or away from water. • HYDROTROPISM n. growth in the direction of water.
HYPERCOLOURS	• HYPERCOLOUR n. a dye that causes a fabric to change colour with a change of temperature.
OROPHARYNGES	• oropharynges n. Plural of oropharynx. • OROPHARYNX n. the part of the pharynx between the soft palate and the epiglottis.
OROPHARYNXES	• oropharynxes n. Plural of oropharynx. • OROPHARYNX n. the part of the pharynx between the soft palate and the epiglottis.
PORPHYROPSIN	• porphyropsin n. Any of a group of purple carotenoid pigments, similar to rhodopsin, in the retinas of some fish. • PORPHYROPSIN n. a purple pigment in the retinal rods of freshwater fishes that resembles rhodopsin.
PROTOHISTORY	• protohistory n. The period between prehistory and history, during which a culture or civilization has not yet developed… • PROTOHISTORY n. the study of human beings in the times that immediately antedate recorded history.
PYROPHORUSES	• PYROPHORUS n. any substance capable of igniting spontaneously on exposure to air.
STEREOCHROMY	• stereochromy n. The painting of murals using pigments mixed with water glass. • STEREOCHROMY n. colourful wall painting.
SYNCHROTRONS	• synchrotrons n. Plural of synchrotron. • SYNCHROTRON n. a type of very high-energy particle accelerator.
THYROTROPINS	• thyrotropins n. Plural of thyrotropin. • THYROTROPIN n. a hormone, produced in the anterior lobe of the pituitary gland, which stimulates the thyroid, also THYROTROPHIN.
URETHROSCOPY	• urethroscopy n. (Medicine) Examination of the interior of the urethra. • URETHROSCOPY n. medical examination of the urethra.

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 1Word.ws and WikWik.org.

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English Wiktionary: 68 words
Scrabble in French: 7 words
Scrabble in Spanish: 1 word
Scrabble in Italian: no word
Scrabble in German: no word
Scrabble in Romanian: no word

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