The Collaborative International Dictionary of English v.0.48:

Impress \Im*press"\, v. t. [imp. & p. p. Impressed; p. pr. &
   vb. n. Impressing.] [L. impressus, p. p. of imprimere to
   impress; pref. im- in, on + premere to press. See Press to
   squeeze, and cf. Imprint.]
   1. To press, stamp, or print something in or upon; to mark by
      pressure, or as by pressure; to imprint (that which bears
      the impression).
      [1913 Webster]

            His heart, like an agate, with your print impressed.
                                                  --Shak.
      [1913 Webster]

   2. To produce by pressure, as a mark, stamp, image, etc.; to
      imprint (a mark or figure upon something).
      [1913 Webster]

   3. Fig.: To fix deeply in the mind; to present forcibly to
      the attention, etc.; to imprint; to inculcate.
      [1913 Webster]

            Impress the motives of persuasion upon our own
            hearts till we feel the force of them. --I. Watts.
      [1913 Webster]

   4. [See Imprest, Impress, n., 5.] To take by force for
      public service; as, to impress sailors or money.
      [1913 Webster]

            The second five thousand pounds impressed for the
            service of the sick and wounded prisoners. --Evelyn.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

impressed \impressed\ pred. adj.
   having the conscious mind deeply or markedly affected or
   influenced; -- usually used with by or with.
   [WordNet 1.5]

WordNet (r) 3.0 (2006):

impressed
    adj 1: deeply or markedly affected or influenced

Moby Thesaurus II by Grady Ward, 1.0:

75 Moby Thesaurus words for "impressed":
   affected, agonized, carved, confirmed, creased, cut, deep-dyed,
   deep-engraven, deep-fixed, deep-grounded, deep-laid, deep-rooted,
   deep-seated, deep-set, deep-settled, devoured by, dyed-in-the-wool,
   embedded, embossed, enchased, engrafted, engraved, entrenched,
   established, etched, firmly established, furrowed, glyphic, graved,
   graven, grooved, imbued with, implanted, impressed with, imprinted,
   incised, indelibly impressed, infixed, ingrained, ingrown,
   inscribed, insculptured, inveterate, inwrought, lined,
   long-established, marked, moved, obsessed, obsessed by, old-line,
   on a rock, on bedrock, penetrated with, printed, racked, rooted,
   sculptured, seized with, set, settled, stabilized, stamped,
   stricken, tooled, torn, tortured, touched, vested,
   well-established, well-founded, well-grounded, well-set,
   well-settled, wracked