Definition of baleen
: a horny keratinous substance found in two rows of transverse plates which hang down from the upper jaws of baleen whales
Recent Examples of baleen from the Web
The researchers suspected that an environmental change happened during that time that essentially caused the baleen whales to bulk up.
Naturalists could only speculate on how early whales transitioned into an aquatic lifestyle, and just as mysterious was the origin of the largest animals on earth, the baleen whales.
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Origin and Etymology of baleen
Middle English baleine whale, baleen, from Latin balaena whale; akin to Greek phallaina whale
First Known Use: 14th century
BALEEN Defined for Kids
Definition of baleen for Students
: a tough material that hangs down from the upper jaw of whales without teeth and is used by the whale to filter small ocean animals out of seawater
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