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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
An unusual black box near the American Museum of Natural History’s (AMNH) iconic blue whale lures unsuspecting visitors to one of the museum’s most dramatic displays. Laura Baisas, Popular Science, 13 Aug. 2026 This spring, three blue whale carcasses washed up on the Newfoundland shore, spurring a panic about whale explosions. Naomi Skwarna, hazlitt.net, 13 Aug. 2026 Gray whales migrate through the area between December and April every year, while humpbacks visit from spring through fall, and blue whales make their appearance from June through October. Cu Fleshman, Travel + Leisure, 15 July 2026 Its roughly 45,000 members tirelessly post absurd misinformation on everything from the nuances of watering a brick to grow a house to the claim that blue whales are actually orange. Frank Landymore, Futurism, 25 June 2026 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

Browse Nearby Words

Cite this Entry

“Blue whale.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/blue%20whale. Accessed 17 Aug. 2026.

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

More from Merriam-Webster on blue whale

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!