Definitions

1. verb

to move back or recede; to come or go back

“The tide began to retrude as the moon moved into its waning phase.”

2. verb

to recede or shrink in size or extent

“The patient’s tumor started to retrude after undergoing chemotherapy.”

3. noun

the act of receding or shrinking

“The doctor examined the patient’s condition and noted the obvious retrude of the tumor.”