Answer: grp

AnswerCrossword Clue
GRPOrg.
GRPAggregation: Abbr.
GRPCluster: Abbr.
GRPOne might get a pref. rate
GRPAggregation, for short
GRPBrief assembly?
GRPOrg. or assoc.
GRPAssn.
GRPAssoc.