1
- Astronomy (of planetary motion) proceeding from west to east; direct. The opposite of RETROGRADE.【天文】（行星运动）同向旋转的; 顺行的。RETROGRADE的反义词。
2
- Geology (of a metamorphic change) resulting from an increase in temperature or pressure【地质】前进变质作用的, 进化变质作用的。
no obj.
- Geology (of a beach or coastline) advance towards the sea as a result of the accumulation of water-borne sediment【地质】海岸推进, 岸进。
派生词
progradation
noun词源
early 20th cent. (as a verb)： from PRO-1 'forwards'+RETROGRADE.