an odor arising from spices, plants, cooking, etc., especially an agreeable odor; fragrance.
(of wines and spirits) the odor or bouquet.
a pervasive characteristic or quality.

1175–1225; < Latin < Greek: spice; replacing Middle English aromat < Old French < Latin arōmat- (stem of arōma)

1. See perfume. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
aroma (əˈrəʊmə)
1.  a distinctive usually pleasant smell, esp of spices, wines, and plants
2.  a subtle pervasive quality or atmosphere
[C18: via Latin from Greek: spice]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Word Origin & History

early 13c., from L. aroma "sweet odor," from Gk. aroma "seasoning, sweet spice," of unknown origin.
Online Etymology Dictionary, © 2010 Douglas Harper
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Encyclopedia Britannica


the property of certain substances, in very small concentrations, to stimulate chemical sense receptors that sample the air or water surrounding an animal. In insects and other invertebrates and in aquatic animals, the perception of small chemical concentrations often merges with perception via contact of heavy concentrations (taste), and with other chemoreceptive specializations. See also smell.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
The smell of popcorn has been replaced by a lingering aroma of damp plaster and mold.
IF the aroma lingers, it lingers only faintly, clinging by the barest whiff to
  brick and pavement.
Aroma is moderate malt with some citrus and light pine.
Each aroma pumped across the array induces a unique pattern of responses that
  is fed into a computer.
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