Marine mammals can be subdivided into four recognised groups; cetaceans (whales, dolphins, and porpoises), pinnipeds (seals, sea lions and walruses), sirenians (manatees and dugongs), and fissipeds, which are the group of carnivores with separate digits (the polar bear, and two species of otter).
LINK / CITE ADD TO WORD LIST. adjective. The definition of sarcastic is someone or something that is a sneering remark. An example of sarcastic is a person saying that a song is their favorite, when in reality they dislike it immensely and have worked vigorously to get it removed from the program. 1  of, having the nature of, or characterized by sarcasm; sneering, caustic, cutting, etc.
(slang, usually sarcastic) A person who is unique and special (referring to the idea that no two snowflakes are identical in structure).