Dictionary definition · group
noun
- any number of entities (members) considered as a unit
- (chemistry) two or more atoms bound together as a single unit and forming part of a molecule
- a set that is closed, associative, has an identity element and every element has an inverse
verb
- arrange into a group or groups"Can you group these shapes together?"
- form a group or group together
Source: Open English WordNet (CC BY 4.0).