進しん行こう性せい

noun which may take the genitive case particle 'no'

progressive; advancing

Medical term describing a disease or condition that gradually worsens over time.

• この病びょう気きは進しん行こう性せいで、徐じょ々じょに症しょう状じょうが悪あっ化かします。

  This disease is progressive, and symptoms gradually worsen.

• 進しん行こう性せいの難なん病びょうと診しん断だんされた。

  He was diagnosed with a progressive intractable disease.