Group

noun

1. a number of individuals assembled together or having some unifying relationship or action
2. a mathematical set that is closed under a binary associative operation, contains an identity element, and has an inverse for every element
3. a number of musicians who play together regularlyspecifically
4. two or more figures (such as in sculpture or painting) forming a complete unit in a larger composition
5. an assemblage of objects regarded as a unit
6. a military unit consisting of a headquarters and attached battalions
7. a unit of the U.S. Air Force higher than a squadron and lower than a wing
8. an assemblage of related organisms
9. two or more atoms joined together or sometimes a single atom forming part of a molecule
10. functional groupespecially
11. an assemblage of elements forming one of the vertical columns of the periodic table
12. a bed or layer of rocks deposited during an era