v. re·gressed, re·gress·ing, re·gress·es
1. To return to a previous, usually worse or less developed state: When I left the country, my ability to speak the language regressed.
2. To have a tendency to approach or go back to a statistical mean.
3. To move backward or away from a reference point; recede: The seas regressed as the glaciers grew larger.
To induce a state of regression in: techniques to regress a patient under hypnosis.
1. The act of regressing, especially the returning to a previous, usually worse or less developed state.
2. The act of reasoning backward from an effect to a cause or of continually applying a process of reasoning to its own results.
[Latin regredī, regress- : re-, re- + gradī, to go; see ghredh- in the Appendix of Indo-European roots.]
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