The Collaborative International Dictionary of English v.0.48:

Individually \In`di*vid"u*al*ly\, adv.
   1. In an individual manner or relation; as individuals;
      separately; each by itself; as, every person must apply
      individually for admission. "Individually or
      collectively." --Burke.
      [1913 Webster]

            How should that subsist solitarily by itself which
            hath no substance, but individually the very same
            whereby others subsist with it?       --Hooker.
      [1913 Webster]

   2. In an inseparable manner; inseparably; incommunicably;
      indivisibly; as, individually the same.
      [1913 Webster]

            [Omniscience], an attribute individually proper to
            the Godhead.                          --Hakewill.
      [1913 Webster]

WordNet (r) 3.0 (2006):

individually
    adv 1: apart from others; "taken individually, the rooms were,
           in fact, square"; "the fine points are treated singly"
           [syn: individually, separately, singly,
           severally, one by one, on an individual basis]

Moby Thesaurus II by Grady Ward, 1.0:

19 Moby Thesaurus words for "individually":
   alone, apart, by itself, in person, in propria persona,
   in the flesh, in the singular, independently, once, one by one,
   particularly, per se, personally, privately, separately, severally,
   single-handedly, singly, singularly