Other forms: corianders
Coriander is a plant that's used as flavoring in cooking. Both the leaves and seeds of coriander show up in Indian, Mexican, and Thai recipes, among others.
The bright green leaves of coriander are also called "cilantro" in North America, and they're an ingredient in many regional dishes, often appearing as a garnish on both curries and guacamole. Coriander seeds are ground into a spice with a lemony, slightly spicy flavor that's found in many Indian dishes. Coriander has a Greek root, koriannon, which some botanists suspect is related to koris, "bedbug," because of the unripe plant's unpleasant smell.