1. The activity of putting things together in groups
   "The grouping of students by ability level was controversial"; "The chef's grouping of ingredients created a harmonious flavour profile"
    
2. Any number of entities (members) considered as a unit
   "The students were divided into groupings of four";
   - group
    
3. A system for classifying things into groups
   "The librarian's grouping system made it easy to find books on specific topics";
   - pigeonholing

1. Arrange into a group or groups
   "Can you group these shapes together?"
    
2. Form a group or group together
   "The protesters grouped in front of the government building";
   - aggroup [archaic]

Derived forms: groupings

Type of: abstract entity, abstraction, activity, assemble, assort, class, classification system, classify, foregather [formal], forgather, gather, meet, separate, sort, sort out

Encyclopedia: Grouping