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There are 8 twelve-letter words beginning with HYDROC

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.
HYDROCEPHALI	• hydrocephali n. Plural of hydrocephalus. • HYDROCEPHALUS n. an accumulation of serous fluid within the cranial cavity, also HYDROCEPHALY.
HYDROCEPHALY	• hydrocephaly n. Hydrocephalus. • HYDROCEPHALY n. an accumulation of serous fluid within the cranial cavity, also HYDROCEPHALUS.
HYDROCHLORIC	• hydrochloric adj. (Chemistry) Of or relating to hydrochloric acid. • HYDROCHLORIC adj. applied to an acid composed of hydrogen and chlorine, hydrogen chloride, still sometimes called muriatic acid.
HYDROCODONES	• hydrocodones n. Plural of hydrocodone. • HYDROCODONE n. a semisynthetic opioid drug derived from codeine and thebaine.
HYDROCOLLOID	• hydrocolloid n. Any material that forms a colloid (especially a gel) when mixed with water. • hydrocolloid n. Such a material, made from agar, used to make dental impressions. • HYDROCOLLOID n. a substance that yields a gel with water.
HYDROCRACKED	• hydrocracked v. Simple past tense and past participle of hydrocrack. • hydrocracked adj. That has been subjected to hydrocracking. • HYDROCRACK v. to crack hydrocarbons in the presence of hydrogen.
HYDROCRACKER	• hydrocracker n. (Organic chemistry) A chemical engineering plant in which hydrocracking takes place. • HYDROCRACKER n. one engaged in hydrocracking.

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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English Wiktionary: 31 words
Scrabble in French: 11 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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