释义 |
ret·ro·gres·sion \ˌ ̷ ̷ ̷ ̷ˈgreshən\ noun (-s) Etymology: Latin retrogressus (past participle) + English -ion 1. : regression 3 2. : a reversal in development or condition: as a. : a passing from a higher to a lower or from a more to a less specialized state or type of organization or structure in the course of the development of an organism b. : subsidence or decline of symptoms or manifestations of a disease c. : retrograde imitation in contrapuntal music |