Source : Webster's Revised Unabridged Dictionary (1913)

Aroma \A*ro"ma\, n. [L. aroma, Gr. ?: cf. OE. aromaz, aromat,
   spice, F. aromate.]
   1. The quality or principle of plants or other substances
      which constitutes their fragrance; agreeable odor; as, the
      aroma of coffee.

   2. Fig.: The fine diffusive quality of intellectual power;
      flavor; as, the subtile aroma of genius.

Source : WordNet®

aroma
     n 1: any property detected by the olfactory system [syn: {olfactory
          property}, {smell}, {odor}, {odour}, {scent}]
     2: a distinctive odor that is pleasant [syn: {fragrance}, {perfume},
         {scent}]