from The Century Dictionary and Cyclopedia
- n. A family of existent delphinoid Cetacea, of the group Delphinoidea, having functional teeth in the lower jaw only, and the skull strongly asymmetrical.
- n. In stricter use, a family of sperm-whales, typified by the genus Physeter, and containing the subfamilies Physeterinæ and Kogiinæ, or ordinary and pygmy sperm-whales.
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