Answer:

MED

AnswerCrossword Clue
MEDClub ..
MEDClub ... (vacation venue)
MEDKind of sch.
MEDSmaller than lg.
MEDSmaller than lge.
MEDPart of A.M.A.
MEDPre-... (doc.track)
MEDClub ...
MEDPre-..
MEDBeach-lover's Club
MEDNot sm. or lge.
MED.. school
MEDPharm. stuff
MEDPart of MD
MEDShirt size: Abbr.
MEDIt's not quite lge.
MEDSchool type
MEDIt can follow pre- or precede school
MEDAvg. size
MEDScrip spec
MEDDr.'s field
MEDDr.'s study
MEDPost-op dose
MEDT-shirt size: Abbr.
MEDNSAID, e.g.
MEDSweatshirt size: Abbr.
MEDTwo below XL
MED... school
MEDFuture doc's school type
MEDTeaching deg.
MEDConcerning health (abbr.)
MEDKind of school
MEDType of school for doctors
MEDClub ... (resort chain)
MEDKind of school or student
MEDType of school for docs
MEDSize abbr.
MEDThe "M" of MCAT (abbr.)
MEDSchool for docs
MEDClub ... resort