tetrahydrobiopterin
Word Rarity
Very rare
Frequency: Zipf frequency 0.00 in modern English
30
Scrabble Score
19
Letters
3
Syllables
12
Unique Chars
Meaning
noun
A naturally-occurring nutrient and essential cofactor of the three aromatic amino acid hydroxylase enzymes, used in the biosynthesis of the neurotransmitters serotonin, melatonin, dopamine, norepinephrine, epinephrine, and nitric oxide.
Uncountable