de·gres·sion (dĭ-grĕshən, dē-)
A descent by stages or steps.
[Middle English, from Medieval Latin dēgressiō, dēgressiōn-, descent, from Latin dēgressus, past participle of dēgredī, to step down : dē-, de- + gradī, to step; see ghredh- in the Appendix of Indo-European roots.]
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