British spelling; the present participle of aromatise, meaning adding aromatic or fragrant qualities to a substance.
From aroma plus -tising (British present participle form). The -ing form shows an ongoing action of adding aromatic properties.
When perfumers are 'aromatising' a candle or chemists are 'aromatising' a solution, they're performing one of the oldest human crafts—making the world smell better!
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