プチアリンプチアリンMeanings1nounptyalinBiochemistry term for a salivary amylase enzyme that breaks down starch. Used in medical and scientific contexts.プチアリンは唾だ液えき中ちゅうに含ふくまれる消しょう化か酵こう素その一いっ種しゅです。Ptyalin is a type of digestive enzyme found in saliva.