List of 13-letter words beginning with

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There are 6 thirteen-letter words beginning with HYDROS

HYDROSCOPICAL	• HYDROSCOPICAL adj. relating to a hydroscope, also HYDROSCOPIC.
HYDROSOMATOUS	• HYDROSOMATOUS adj. of or like hydrosomata.
HYDROSTATICAL	• hydrostatical adj. Alternative form of hydrostatic. • HYDROSTATICAL adj. of or relating to fluids at rest or to the pressures they exert or transmit, also HYDROSTATIC.
HYDROSULPHATE	• hydrosulphate n. Alternative form of hydrosulfate. • HYDROSULPHATE n. any quaternary acid salt formed by addition of an organic base to sulphuric acid, such as aniline hydrosulphate.
HYDROSULPHIDE	• hydrosulphide n. (Britain) Alternative spelling of hydrosulfide. • HYDROSULPHIDE n. a compound formed by action of hydrogen sulphide on a hydroxide.
HYDROSULPHITE	• hydrosulphite n. Alternative spelling of hydrosulfite. • HYDROSULPHITE n. a salt of hydrosulphurous acid; esp. the sodium salt, used as a reagent.

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: 25 words
Scrabble in French: 4 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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