n. A genus of cetaceans; the sperm-whales: so called from having under teeth only, or teeth only in the lower jaw: now superseded by Physeter.
n. A genus of ophidians, giving name to the Catodonta.
Word Usage
"Notable marine mammals include blue whale Balaenoptera musculus (E) and sperm whale Physeter catodon, which are occasionally observed, as well as 10 species of dolphin and dugong Dugong dugon (V)."