What does "regrouping" mean?

The word "regroup" is a verb that describes the act of reforming into a group or collection of people or things after the group has been separated or scattered. "Regrouping" is the present participle of the word regroup, used to describe the act of regrouping in an ongoing present tense.

An example of the word "regrouping" is as follows: "Due to the devastating surprise attack at midnight, the infantry didn't even begin regrouping until the enemy had already retreated." Another example of the word "regroup" is: "The young child began to regroup his baseball card collection after the bully scattered them about."