The Collaborative International Dictionary of English v.0.48:

Invert \In*vert"\, v. t. [imp. & p. p. Inverted; p. pr. & vb.
   n. Inverting.] [L. invertere, inversum; pref. in- in +
   vertere to turn. See Verse.]
   [1913 Webster]
   1. To turn over; to put upside down; to upset; to place in a
      contrary order or direction; to reverse; as, to invert a
      cup, the order of words, rules of justice, etc.
      [1913 Webster]

            That doth invert the attest of eyes and ears,
            As if these organs had deceptious functions. --Shak.
      [1913 Webster]

            Such reasoning falls like an inverted cone,
            Wanting its proper base to stand upon. --Cowper.
      [1913 Webster]

   2. (Mus.) To change the position of; -- said of tones which
      form a chord, or parts which compose harmony.
      [1913 Webster]

   3. To divert; to convert to a wrong use. [Obs.] --Knolles.
      [1913 Webster]

   4. (Chem.) To convert; to reverse; to decompose by, or
      subject to, inversion. See Inversion, n., 10.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Inverted \In*vert"ed\, a.
   [1913 Webster]
   1. Changed to a contrary or counterchanged order; reversed;
      characterized by inversion.
      [1913 Webster]

   2. (Geol.) Situated apparently in reverse order, as strata
      when folded back upon themselves by upheaval.
      [1913 Webster]

   Inverted arch (Arch.), an arch placed with crown downward;
      -- much used in foundations.
      [1913 Webster]

WordNet (r) 3.0 (2006):

inverted
    adj 1: being in such a position that top and bottom are
           reversed; "a quotation mark is sometimes called an
           inverted comma"; "an upside-down cake" [syn: inverted,
           upside-down]
    2: (of a plant ovule) completely inverted; turned back 180
       degrees on its stalk [syn: anatropous, inverted] [ant:
       amphitropous]

Moby Thesaurus II by Grady Ward, 1.0:

25 Moby Thesaurus words for "inverted":
   arsy-varsy, ass over elbows, back-to-front, backwards, capsized,
   chiastic, everted, gay, homoerotic, homophile, hyperbatic,
   inside out, introverted, invaginated, inversed, outside in,
   palindromic, queer, resupinate, retroverted, reversed, topsy-turvy,
   transposed, upside-down, wrong side out