Final answer:
The Smithsonian Trinomial system is a naming system used in biology to assign unique scientific names to species. It consists of three parts: the genus name, the species epithet, and the author's name.
Step-by-step explanation:
The Smithsonian Trinomial system is a naming system used in taxonomy to assign unique scientific names to species. It consists of three parts: the genus name, the species epithet, and the author's name. For example, in the scientific name of humans, Homo sapiens, 'Homo' is the genus name, 'sapiens' is the species epithet, and the author's name is omitted in this case. This system ensures that each species has a unique and standardized name, allowing scientists to communicate and classify organisms accurately.