|1.||to go back to an earlier, esp worse, condition; degenerate or deteriorate|
|2.||to move backwards; recede|
|3.||biology to develop characteristics or features of lower or simpler organisms; degenerate|
|[C19: from Latin retrōgressus having moved backwards, from retrōgradī; see |
|the series of living phenomena exhibited by an organism in the course of its development from inception to death|
|the colloidal and liquid substance of which cells are formed, the cytoplasm and nucleus: no longer in technical use|
retrogression ret·ro·gres·sion (rět'rə-grěsh'ən)
The act or process of deteriorating or declining.
A return to a less complex biological state or stage.