orexin
Word Rarity
Very rare
Frequency: Zipf frequency 1.71 in modern English
13
Scrabble Score
6
Letters
2
Syllables
6
Unique Chars
Meaning
noun
Either of two neuropeptide hormones found in vertebrates; the two are orexin-A and orexin-B.
Etymology
From Ancient Greek ὄρεξις (órexis, “appetite”) + -in.