The Spanish word 'aromaterapia' (aromatherapy) comes from French 'aromathérapie', which was created by combining two Ancient Greek words: 'aroma' (ἄρωμα) meaning 'fragrant spice' and 'therapeia' (θεραπεία) meaning 'treatment' or 'healing'. This modern term was coined to describe the practice of using aromatic plant extracts and essential oils for therapeutic purposes.

The Spanish word 'aroma' is a simpler, more common word that shares the same Greek root ἄρωμα. While 'aromaterapia' specifically refers to the therapeutic use of aromatic substances, 'aroma' simply means a pleasant, noticeable smell. Similarly, the word 'terapia' (therapy) comes from the same Greek root θεραπεία and is commonly used on its own to refer to any kind of treatment or healing practice.

English speakers will easily recognize this word's connection to 'aromatherapy', which comes from the same French source word. The English words 'aroma' and 'therapy' are also directly related, sharing the same Greek origins. 'Aromatic', meaning having a pleasant and noticeable smell, is another related English word that comes from the Greek ἄρωμα. The 'therapy' part appears in many English words like 'physiotherapy', 'psychotherapy', and 'therapeutic', all stemming from Greek θεραπεία.