retrogradation
/ˌrɛtrəɡrəˈdeɪʃən/
noun
- The process of moving backward or declining to a worse state.
- Historians noted a retrogradation in living standards after the war.
- The retrogradation of the economy worried many investors.
- The company's retrogradation was due to poor management decisions.
- In astronomy, the apparent backward motion of a planet in its orbit as seen from Earth.
- During retrogradation, the planet seems to move westward for a few weeks.
- The astronomer explained the retrogradation of Jupiter to the students.
- Mars is known for its periodic retrogradation in the night sky.
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