proline
/ˈpɹəʊliːn/
Word Rarity
Very rare
Frequency: Zipf frequency 2.45 in modern English
9
Scrabble Score
7
Letters
2
Syllables
7
Unique Chars
Meaning
noun
A nonessential amino acid C₅H₉NO₂ found in most animal proteins, especially collagen; its cyclic structure leads to kinks in the peptide chain of proteins.
Countable; Uncountable
Etymology
Etymology tree Proto-Indo-European *péh₂wr̥ Proto-Hellenic *pāwər Ancient Greek πῦρ (pûr) Proto-Indo-European *-rós Proto-Hellenic *-rós Ancient Greek -ρός (-rós) Ancient Greek πῠρρός (pŭrrhós)der. German Pyrrolbor. English pyrrole English -olidine English pyrrolidine English proline Short for pyrrolidine.