Coriander seed oil is extracted from the fruit (seed) of coriander (Coriandum sativum L.), which is from the parsley plant family. However, there might be some confusion between coriander and cilantro. Coriander and cilantro are similar, but have several differences. The word "coriander" technically describes the whole plant, but depending on geography, coriander and cilantro have different descriptions. In the United Kingdom, the leaves of the plant are called coriander and the seeds are called coriander seeds. In the United States, the leaves are called cilantro and the seeds are called coriander. However, in India, it is called dhania.