Thayer's Greek Lexicon

 1. to exceed a fixed number of measure, to be left over and
above a certain number or measure
  1) to be over, to remain
  2) to exist or be at hand in abundance
1b1. to be great (abundant)
1b2. a thing which comes in abundance, or overflows unto one,
something falls to the lot of one in large measure
1b3. to redound unto, turn out abundantly for, a thing
  3) to abound, overflow
1c1. to be abundantly furnished with, to have in abundance,
abound in (a thing), to be in affluence
1c2. to be pre-eminent, to excel
1c3. to excel more than, exceed
2. to make to abound
  1) to furnish one richly so that he has abundance
  2) to make abundant or excellent

"Abounding" is used of a flower going from a bud to full bloom.