from the GNU version of the Collaborative International Dictionary of English
- n.pl. A suborder of aquatic carnivorous mammals including the seals and walruses; -- opposed to
from The Century Dictionary and Cyclopedia
- In zoology, the pinnigrade, pinniped, or fin-footed aquatic carnivorous quadrupeds, constituting one of the prime divisions of the order Feræ or Carnivora, the other being the Fissipedia.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. seals; sea lions; walruses
Sorry, no etymologies found.
Occasionally there are sea lions swimming about, but he prefers diving amid fish not harassed by pinnipedia or hook-and-line anglers.