The Collaborative International Dictionary of English v.0.48:

enhanced \enhanced\ adj.
   improved. Contrasted with unenhanced.

   Syn: better.
        [WordNet 1.5]

The Collaborative International Dictionary of English v.0.48:

Enhance \En*hance"\, v. t. [imp. & p. p. Enhanced; p. pr. &
   vb. n. Enhancing.] [Norm. F. enhauncer, enhaucer, OF.
   enhaleier, enhaucier; pref. en- (L. in) + haucier to lift,
   raise up, from an assumed L. altiare, fr. L. altus high; cf.
   Pr. enansar, enanzar, to advance, exalt, and E. advance. See
   Altitude, and cf. Hawser.]
   1. To raise or lift up; to exalt. [Obs.] --Wyclif.
      [1913 Webster]

            Who, naught aghast, his mighty hand enhanced.
                                                  --Spenser.
      [1913 Webster]

   2. To advance; to augment; to increase; to heighten; to make
      more costly or attractive; as, to enhance the price of
      commodities; to enhance beauty or kindness; hence, also,
      to render more heinous; to aggravate; as, to enhance
      crime.
      [1913 Webster]

            The reputation of ferocity enhanced the value of
            their services, in making them feared as well as
            hated.                                --Southey.
      [1913 Webster]

WordNet (r) 3.0 (2006):

enhanced
    adj 1: increased or intensified in value or beauty or quality;
           "her enhanced beauty was the result of a good night's
           sleep rather than makeup"; "careful cleaning was
           responsible for the enhanced value of the painting"

Moby Thesaurus II by Grady Ward, 1.0:

62 Moby Thesaurus words for "enhanced":
   accelerated, advanced, aggrandized, aggravated, ameliorated,
   amplified, annoyed, augmented, beautified, beefed-up, bettered,
   bloated, boosted, broadened, civilized, converted, cultivated,
   cultured, deepened, deliberately provoked, developed, educated,
   elevated, embellished, embittered, enlarged, enriched, exacerbated,
   exasperated, expanded, extended, heated up, heightened, hiked,
   hotted up, improved, increased, inflated, intensified, irritated,
   jazzed up, magnified, multiplied, perfected, polished,
   proliferated, provoked, raised, refined, reformed, reinforced,
   soured, spread, stiffened, strengthened, swollen, tightened,
   transfigured, transformed, widened, worse, worsened



The Free On-line Dictionary of Computing (30 December 2018):

enhancement
enhanced

    1. A change intended to make a product better in
   some way, e.g. new functions, faster, or occasionally more
   compatible with other systems.  Enhancements to hardware
   components, especially integrated circuits often mean they
   are smaller and less demanding of resources.  Sadly, this is
   almost never true of software enhancements.

   Examples include Digital Enhanced Cordless
   Telecommunications, Enhanced Capabilities Port, Enhanced
   Directory Service, Enhanced Dynamic Random Access Memory,
   Enhanced Graphics Adapter, Enhanced IDE, Enhanced
   Integrated Drive Electronics, enhanced parallel port,
   Enhanced Small Disk Interface, List Enhanced, Privacy
   Enhanced Mail.

   2. Marketroid-speak for a bug fix.  This abuse of language
   is a popular and time-tested way to turn incompetence into
   increased revenue.  A hacker being ironic would instead call
   the fix a feature, or perhaps save some effort by declaring
   "That's not a bug, that's a feature!".

   [Jargon File]

   (1998-04-04)