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
What sort of organism?: A cetacean related to today's baleen whales.
Of course, today’s baleen whales include some of the largest animals of all time.
Earliest mysticete from the Late Eocene of Peru sheds new light on the origin of baleen whales.
Feats like that allowed the giant baleen whales to thrive as the oceans changed while smaller baleen whales went extinct.
In a study published Tuesday in the journal Proceedings of the Royal Society B, a team of researchers investigated gigantism in baleen whales, the filter-feeding leviathans that include blue whales, bowhead whales and fin whales.
The researchers suspected that an environmental change happened during that time that essentially caused the baleen whales to bulk up.
All baleen whales eat tiny krill, crustaceans found in all the world's oceans.
Then seemingly overnight, one type of whale – the toothless baleens – became huge.
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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 centurySee Words from the same year
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
Seen and Heard
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