Risso's Dolphin Definition
rĭsōz
noun
A marine mammal (Grampus griseus) having a bulbous head, a tall curved dorsal fin, and a gray body with white streaks or scars.
American Heritage
Origin of Risso's Dolphin
After Antoine Risso (1777–1845), French naturalist born in Nice
From American Heritage Dictionary of the English Language, 5th Edition
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