[1] : The Collaborative International Dictionary of English v.0.48

ab- \ab-\ a^b. latin prep., etymologically the same as e.
   of, off. see of.
   a prefix in many words of latin origin. it signifies from,
   away, separating, or departure, as in abduct, abstract,
   abscond. see a-6.
   1913 webster
see also:
of a- 

[2] : The Collaborative International Dictionary of English v.0.48

ab \ab\ a^b, n. of syriac origin.
   the fifth month of the jewish year according to the
   ecclesiastical reckoning, the eleventh by the civil
   computation, coinciding nearly with august. --w. smith.
   1913 webster

[3] : WordNet (r) 2.0

ab
     n 1: the blood group whose red cells carry both the a and b
          antigens syn: type ab, group ab
     2: a bachelor's degree in arts and sciences syn: bachelor of
        arts, ba, artium baccalaurens
     3: the eleventh month of the civil year; the fifth month of the
        ecclesiastical year in the jewish calendar in july and
        august syn: av
     4: the muscles of the abdomen syn: abdominal, abdominal
        muscle
see also:
type ab group ab bachelor of arts ba artium baccalaurens av 
abdominal abdominal muscle 

[4] : The Free On-line Dictionary of Computing (27 SEP 03)

ab
     
         a bit signaling procedure used in most t1
        transmission facilities where one bit from every sixth frame
        of each of 24 t1 subchannels is used for carrying
        supervisory signaling.
     
        what does it stand for?  is this the same as "bit
        robbing"?
     
        1997-05-05
     
     
see also:
bit signaling procedure t1 subchannels supervisory signaling bit robbing 

Ab >> A Words
Ab, definition of term: Ab
ab_pag1.html

Ab Initio >> A Words
Ab Initio, definition of term: Ab Initio
ab+initio_pag1.html