Collins English-English Dictionary

group [gruːp]

1. 1. n [chem] radical two or more atoms that are bound together in a molecule and behave as a single unit - Compare free radical

   a methyl group -CH₃

2. 2. n a number of persons or things considered as a collective unit

3. 3. n a number of persons bound together by common social standards, interests, etc

4. 4. n (as modifier)

   group behaviour

5. 5. n a small band of players or singers, esp of pop music

6. 6. n a number of animals or plants considered as a unit because of common characteristics, habits, etc

7. 7. n another word, esp in systemic grammar, for phrase

8. 8. n [grammar] an association of companies under a single ownership and control, consisting of a holding company, subsidiary companies, and sometimes associated companies

9. 9. n two or more figures or objects forming a design or unit in a design, in a painting or sculpture

10. 10. n a military formation comprising complementary arms and services, usually for a purpose

    a brigade group

11. 11. n an air force organization of higher level than a squadron

12. 12. n a vertical column of elements in the periodic table that all have similar electronic structures, properties, and valencies - Compare period

13. 13. n [geology] any stratigraphical unit, esp the unit for two or more formations

14. 14. n [maths] a set that has an associated operation that combines any two members of the set to give another member and that also contains an identity element and an inverse for each element

15. 15. n See blood group

16. 16. vb to arrange or place (things, people, etc) in or into a group or (of things, etc) to form into a group

17. 17. vb [Etymology] C17: from French groupe, of Germanic origin; compare Italian gruppo; see crop