The quality or degree of being aromatic; the property of having a fragrant or pleasant smell.
From 'aromatic' (from Greek 'aroma' meaning 'spice' or 'fragrance') plus the suffix '-ity' (from Latin '-itas'), creating an abstract noun measuring aromatic quality.
In chemistry, 'aromaticity' has a totally different meaning—it refers to the stability of carbon rings in molecules—so the same root word means completely different things depending on whether a chemist or a perfumer is talking.
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