| GRO | form a group or group together |
|---|---|
| GRO | for or by a group rather than individuals |
| GRO | the blood group whose red cells carry the A antigen |
| GRO | the blood group whose red cells carry both the A and B antigens |
| GRO | action taken by a group of people |
| GRO | used in some classification systems for plants that bear catkins |
| GRO | the blood group whose red cells carry the B antigen |
| GRO | a commissioned officer (especially one in the Royal Air Force) equivalent in rank to a colonel in the army |
| GRO | used in former classification systems |
| GRO | a discussion among participants who have an agreed (serious) topic |
| GRO | the branch of social psychology that studies the dynamics of interaction in social groups |
| GRO | the blood group whose red cells carry neither the A nor B antigens |