mouth·​part | \ ˈmau̇th-ˌpärt \

Definition of mouthpart

: a structure or appendage near the mouth (as of an insect) especially when adapted for use in gathering or eating food

Examples of mouthpart in a Sentence

Recent Examples on the Web

Lots of flies pose a mild nuisance — like the fruit fly on the left — but the knife-like mouthparts of horse flies make their bites especially painful, according to the University of Kentucky College of Agriculture. Caroline Picard, Good Housekeeping, "QUIZ: Can You Identify These Dangerous Summer Plants and Bugs?," 3 Aug. 2018 Scales Adult females look like hard or soft bumps on stems, leaves, or fruit; males are minute flying insects and larvae are tiny, soft, crawling insects with threadlike mouthparts. The Editors, Good Housekeeping, "The 10 Most Destructive Garden Insects and How to Get Rid of Them," 10 July 2018 Researchers studied the shrimps’ key anatomical features, like the legs, mouthparts and shells, according to a statement by ZooKeys publisher Pensoft. Brigit Katz, Smithsonian, "Introducing a Hairy-Footed Shrimp Named After Bilbo Baggins," 13 June 2018 Scales Adult females look like hard or soft bumps on stems, leaves, or fruit, males are minute flying insects, and larvae are tiny, soft, crawling insects with threadlike mouthparts. The Editors Of Organic Life, Good Housekeeping, "10 Most Destructive Garden Insects And How To Get Rid Of Them," 3 June 2016 Technically speaking, bugs are not synonymous with insects but are a subset of them: those which possess mouthparts that pierce and suck (as opposed to, say, caterpillars and termites, whose mouths are built, like ours, to chew). Steven Strogatz, The New Yorker, "When Twenty-Six Thousand Stinkbugs Invade Your Home," 8 Aug. 2011 The different resulting proteins would each have their own effect on what parts of the genetic code are turned on or off—leading to a male with huge mouthparts and a female without, for instance. Smithsonian, "What Dung Beetles Can Teach Us About Sexual Difference," 22 Mar. 2017 As Gabbatiss reports, instead of the usual ant mouthparts, Vladi has two large mandibular blades. Jason Daley, Smithsonian, "Researcher Find 98-Million-Year-Old Horned Vampire Ant Encased in Amber," 13 Sep. 2017 The adult female beetle lays her eggs in the far end of the twig, then uses her very sharp mouthparts to score the small branch around and around. Neil Sperry, star-telegram, "These seven gardening issues have readers stumped," 20 Oct. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'mouthpart.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of mouthpart

1799, in the meaning defined above

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Last Updated

25 Dec 2018

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The first known use of mouthpart was in 1799

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More Definitions for mouthpart


mouth·​part | \ ˈmau̇th-ˌpärt \

Medical Definition of mouthpart

: a structure or appendage near the mouth especially of an insect

More from Merriam-Webster on mouthpart

Rhyming Dictionary: Words that rhyme with mouthpart

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to express emotion in a dramatic way

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