The word "oleum andropogon nar di" may seem complicated at first, but its spelling can be explained using the International Phonetic Alphabet (IPA). "Oleum" is pronounced as /ˈoʊliəm/, with the stress on the first syllable. "Andropogon" is pronounced as /ænˈdrɑːpəɡɑːn/, with the stress on the second syllable. Lastly, "nar di" is pronounced as /ˈnɑːrdi/, with the stress on the first syllable. Together, the word refers to an essential oil from the Andropogon genus of grasses, and its correct spelling is crucial in the field of aromatherapy.
Oil of citronella, a volatile oil distilled from Andropogon nardi; employed as an insecticide and perfume.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.