krill

noun

: planktonic crustaceans and their larvae (order or suborder Euphausiacea and especially genus Euphausia) that constitute the principal food of baleen whales

Examples of krill in a Sentence

Recent Examples on the Web
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The Adelie and chinstrap penguins are specialists, eating mainly krill. Seth Borenstein, Los Angeles Times, 21 Jan. 2026 The Adelie and chinstrap penguins are specialists, eating mainly krill. CBS News, 20 Jan. 2026 Phytoplankton provide food for krill and fish, which in turn feed larger marine life across the oceans. Joshua Weitz, The Conversation, 13 Jan. 2026 Always check the expiration date on your krill oil supplement and never take the capsules if the expiration date has passed. Bestreviews, Chicago Tribune, 7 Jan. 2026 See All Example Sentences for krill

Word History

Etymology

Norwegian kril fry of fish

First Known Use

1907, in the meaning defined above

Time Traveler
The first known use of krill was in 1907

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Cite this Entry

“Krill.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/krill. Accessed 6 Feb. 2026.

Kids Definition

krill

noun
: small crustaceans and their larvae that make up plankton and form a major food of baleen whales

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