sperm whale

noun

: a very large toothed whale (Physeter macrocephalus synonym P. catodon) that has large conical teeth in the lower jaw, a single blowhole, and a massive squarish head with a closed cavity containing a fluid mixture of spermaceti and oil, and that may reach a length in the male of nearly 60 feet (18.3 meters)

Illustration of sperm whale

Illustration of sperm whale

Examples of sperm whale in a Sentence

Recent Examples on the Web
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The adult male sperm whale washed ashore 12 miles north of Seaside between Del Ray and Sunset Beach, according to a June 1 Instagram post by Seaside Aquarium. Paloma Chavez, Sacbee.com, 4 June 2025 Just under half were crafted from sperm whale bones, while others had come from fin, gray, blue and either right or bowhead whales. Sarah Kuta, Smithsonian Magazine, 28 May 2025 Most female sperm whales form bonds with other females in their families, forming social groups. Saleen Martin, USA Today, 6 May 2025 On the southern coast, the town of Mirissa is one of three areas where guests can see the congregation of Bryde’s, minke, humpback, and sperm whales. Julia Zaltzman, Robb Report, 30 May 2025 See All Example Sentences for sperm whale

Word History

Etymology

short for spermaceti whale

First Known Use

circa 1700, in the meaning defined above

Time Traveler
The first known use of sperm whale was circa 1700

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Cite this Entry

“Sperm whale.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sperm%20whale. Accessed 1 Jul. 2025.

Kids Definition

sperm whale

noun
: a large toothed whale with a large chamber in the skull that contains a fluid mixture of spermaceti and oil

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