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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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 As Punta Arenas is also the departure point through the fjords, coastal expeditions can also encounter humpback whales, sei whales, pods of Peale’s dolphins, and perhaps a glimpse of the world’s largest animal—the Antarctic blue whale. AFAR Media, 23 Dec. 2024 In fact, just two blue whale births have ever been documented — off South Africa in 1911, and off Sri Lanka in 1946. Brendan Rascius, Miami Herald, 25 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 28 Mar. 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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