blue whale

noun

: a very large baleen whale (Balaenoptera musculus synonym Sibbaldus musculus) that may reach a weight of 150 tons (136 metric tons) and a length of 100 feet (30 meters) and is generally considered the largest living animal

Illustration of blue whale

Illustration of blue whale

Examples of blue whale in a Sentence

Recent Examples on the Web
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March is the peak time for gray whales to migrate, and throughout April, they will be replaced with humpback and fin whales before blue whales begin to show up, the tour agency said. Paloma Chavez, Sacbee.com, 26 Mar. 2025 Unlike blue whales, humpback whales can also eat anchovies and sardines, and their choruses returned when there was a population explosion of those fish. Bloomberg, The Mercury News, 18 Mar. 2025 Conducted over the course of six years, the study focused on three baleen species — humpback, fin and blue whales — located off the U.S. West Coast. Brendan Rascius, Miami Herald, 14 Mar. 2025 Whales in Fight or Flight Baleen whales are often more solitary, as compared to orcas, and include species like humpbacks, blue whales, and gray whales. Monica Cull, Discover Magazine, 7 Feb. 2025 See All Example Sentences for blue whale

Word History

First Known Use

1851, in the meaning defined above

Time Traveler
The first known use of blue whale was in 1851

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Cite this Entry

“Blue whale.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/blue%20whale. Accessed 13 Apr. 2025.

Kids Definition

blue whale

noun
: a whale that may reach a weight of 150 tons (135 metric tons) and a length of 100 feet (30 meters) and is generally considered the largest living animal

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