| kogia | (n) pygmy sperm whales, Syn. genus Kogia |
| dwarf sperm whale | (n) very small (to 8 feet) sperm whale of central coasts of Atlantic and Pacific, Syn. Kogia simus |
| pygmy sperm whale | (n) small sperm whale of warm waters of both coasts of North America, Syn. Kogia breviceps |
| Kogia | prop. n. (Zool.) The genus comprising the pygmy sperm whales. |