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There are 6 twelve-letter words beginning with BIOS

BIOSATELLITE	• biosatellite n. An artificial satellite that is designed to carry humans or other organisms. • BIOSATELLITE n. an artificial satellite containing living organisms to be studied during flight.
BIOSCIENTIST	• bioscientist n. A scientist who specializes in any of the biosciences. • BIOSCIENTIST n. a practitioner of bioscience.
BIOSURGERIES	• BIOSURGERY n. medical treatment with living agents e.g. maggots to clean wounds.
BIOSYNTHESES	• biosyntheses n. Plural of biosynthesis. • BIOSYNTHESIS n. the production of a chemical compound by a living organism.
BIOSYNTHESIS	• biosynthesis n. (Biochemistry) The synthesis of organic compounds within a living organism, especially the synthesis… • BIOSYNTHESIS n. the production of a chemical compound by a living organism.
BIOSYNTHETIC	• biosynthetic adj. (Biochemistry) of or pertaining to biosynthesis. • BIOSYNTHETIC adj. relating to biosynthesis.

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: 37 words
Scrabble in French: 10 words
Scrabble in Spanish: no word
Scrabble in Italian: 2 words
Scrabble in German: no word
Scrabble in Romanian: 23 words

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