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A term used to describe the smell or taste of a plant or flower.

Aroma (Wikipedia)

An odor (American English) or odour (Commonwealth English; see spelling differences) is caused by one or more volatilized chemical compounds that are generally found in low concentrations that humans and animals can perceive by their sense of smell. An odor is also called a "smell" or a "scent", which can refer to either a pleasant or an unpleasant odor.

330px Jan Brueghel d. O. Allegorie van de geur
"Smell", from Allegory of the Senses by Jan Brueghel the Elder, Museo del Prado

While "odor" and "smell" can refer to pleasant and unpleasant odors, the terms "scent", "aroma", and "fragrance" are usually reserved for pleasant-smelling odors and are frequently used in the food and cosmetic industry to describe floral scents or to refer to perfumes.

Aroma (Wiktionary)

English

Etymology

From Late Latin arōmata (spices) (or arōma (spice)), from Ancient Greek ἄρωμα (árōma

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