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There are 4 words beginning with OREX

OREXIN	• orexin n. (Biochemistry) Either of two neuropeptide hormones found in vertebrates; the hypocretins. • OREXIN n. a hormone that stimulates the appetite and is thought to be important for sleep regulation.
OREXINS	• orexins n. Plural of orexin. • OREXIN n. a hormone that stimulates the appetite and is thought to be important for sleep regulation.
OREXIS	• orexis n. (Psychology) The affective and conative character of mental activity as contrasted with its cognitive… • OREXIS n. (Greek) an appetite.
OREXISES	• OREXIS n. (Greek) an appetite.

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: 10 words
Scrabble in French: 2 words
Scrabble in Spanish: no word
Scrabble in Italian: no word
Scrabble in German: no word
Scrabble in Romanian: 6 words

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