WHAT DOES THIS MEAN?

I went to the doctor yesterday and I was told that my baby was in the "58th percentile." What exactly does that mean? My doctor told me that meant the baby would be 7/12 to 8 pounds when he was born. Anyone wish to elaborate?

00
    09/04/14
    he would be a good size for a baby....one big baby u will be having
    1
      09/04/14
      I wouldn't bank on the weight being right..
      They have a chart they put the kids' weight and height on and compare to kids across the nation.
      1
      About Sidney
      Current: Brunswick, Georgia
      Birth: March 14
      On Moms.com since: Jan 30, 2014