/ daɪˈgres; NAmE / verb
[ v ] ( formal ) to start to talk about sth that is not connected with the main point of what you are saying
► di·gres·sion / daɪˈgreʃn; NAmE / noun [ C , U ]:
After several digressions, he finally got to the point.
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WORD ORIGIN
early 16th cent.: from Latin digress- stepped away, from the verb digredi , from di- aside + gradi to walk.