Answer:

ASSN

AnswerCrossword Clue
ASSNAMA or ABA
ASSNOrg.
ASSNPart of AMA
ASSNPart of P.T.A.
ASSNProfessional org.
ASSNPart of NBA: Abbr.
ASSNPTA member?: Abbr.
ASSNSpecial-interest grp.
ASSNPart of NCAA (abbr.)
ASSNThe A of PGA (abbr.)
ASSNClub (abbr.)
ASSNGrp.
ASSNNBA part (abbr.)
ASSNPt. of Nacubo
ASSNPt. of Nascar
ASSNPt. of SLMA
ASSNPt. of AAA
ASSNPub. of a newsletter, often
ASSNGrp. of professionals
ASSNPt. of AMA
ASSNPt. of PGA
ASSNPt. of NAACP
ASSNThe "A" in PGA: Abbr.
ASSNCo.
ASSNPart of AAA: Abbr.
ASSNPart of AARP: Abbr.
ASSNPt. of NASDAQ
ASSNPart of PTA: Abbr.
ASSNGp.
ASSNPart of NAACP: Abbr.
ASSNGp. with a common purpose
ASSNNBA part: Abbr.
ASSNPTA part: Abbr.
ASSNFocused gp.
ASSNPGA part: Abbr.
ASSNSoc.
ASSNNCAA part: Abbr.
ASSNPart of AMA: Abbr.
ASSNPart of PGA: Abbr.
ASSNThe "A" in many bus. names