1.  aroma(n = noun.attribute) odor, odour, olfactory property, scent, smell - any property detected by the olfactory system;
is a kind of property
has particulars: bouquet, fragrance, fragrancy, redolence, sweetness, fetidness, foulness, malodorousness, rankness, stinkiness, muskiness, rancidness
Derived forms adjective aromatic₁, verb aromatise₁, verb aromatize₁

2.  aroma(n = noun.cognition) fragrance, perfume, scent - a distinctive odor that is pleasant;
is a kind of odor, odour, olfactory perception, olfactory sensation, smell
has particulars: incense
Derived forms adjective aromatic₂, verb aromatise₁, verb aromatize₁

1.  The quality or principle of plants or other substances which constitutes their fragrance; agreeable odor; as, the aroma of coffee. [1913 Webster]

2.  Fig.: The fine diffusive quality of intellectual power; flavor; as, the subtile aroma of genius. [1913 Webster]

aroma, n.
1 a fragrance; a distinctive and pleasing smell, often of food.
2 a subtle pervasive quality.

Etymology:
L f. Gk aroma -atos spice

N  fragrance, aroma, redolence, perfume, bouquet, essence, scent, sweet smell, aromatic perfume, agalloch, agallochium, aloes wood, bay rum, calambac, calambour, champak, horehound, lign-aloes, marrubium, mint, muskrat, napha water, olibanum, spirit of myrcia, essential oil, incense, musk, frankincense, pastil, pastille, myrrh, perfumes of Arabia, otto, ottar, attar, bergamot, balm, civet, potpourri, pulvil, nosegay, scentbag, sachet, smelling bottle, vinaigrette, eau de Cologne, toilet water, lotion, after-shave lotion, thurification, perfumer, eucalyptus oil, pinene, fragrant, aromatic, redolent, spicy, savory, balmy, scented, sweet-smelling, sweet-scented, perfumed, perfumatory, thuriferous, fragrant as a rose, muscadine, ambrosial.