in·​ci·​sor | \ in-ˈsī-zər How to pronounce incisor (audio) \

Definition of incisor

: a front tooth typically adapted for cutting especially : one of the cutting teeth in mammals located between the canines when canines are present — see tooth illustration

Examples of incisor in a Sentence

Recent Examples on the Web The creatures have tusk-like incisors, visible in the new photographs of the animals. National Geographic, "Fanged mouse-deer identified after vanishing for a generation," 11 Nov. 2019 My front teeth are too long and my incisors too pointy. Summer Block, Longreads, "Better Late," 23 Aug. 2019 There are specific traps for miniature moles to two-foot-long nutria, a burrowing rodent with orange incisors that carries pathogens and parasites when diving into pools and ponds. Janet Eastman,, "What to do about cougars in the neighborhood, skunks under the house, bats in the attic," 19 July 2019 To the right of her navel, there were two pairs of ugly red puncture holes: incisors. Rachel Aviv, The New Yorker, "Cairo: A Type of Love Story," 30 Apr. 2018 The oldest hominin remains from East Asia, two incisors from southwest China, are around 1.7 million years old (see ‘Travelling Hominins’). Colin Barras, Scientific American, "Tools from China are Oldest Hint of Human Lineage Outside Africa," 11 July 2018 So the owner tried to help, by attempting to saw the painful top off the offending incisor. Lizzie Wade, Science | AAAS, "3000-year-old sawn-off tooth may be the earliest evidence of horse dentistry," 2 July 2018 Four types of teeth are nestled into our jaws: molars, premolars, canines and incisors, plus the optional wisdom teeth. Charlotte Hu, Discover Magazine, "Teeth," 15 June 2018 Individual slots for each tooth (incisors, canines, molars et. Sarah Schreiber, Good Housekeeping, "This Baby Box Has Completely Divided a Generation of Parents," 20 Dec. 2016

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'incisor.' 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 incisor

1666, in the meaning defined above

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The first known use of incisor was in 1666

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Cite this Entry

“Incisor.” Dictionary, Merriam-Webster, Accessed 19 Feb. 2020.

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How to pronounce incisor (audio)

English Language Learners Definition of incisor

: a tooth that has a sharp edge for biting : one of the four front teeth of the upper or lower jaw


in·​ci·​sor | \ in-ˈsī-zər How to pronounce incisor (audio) \

Kids Definition of incisor

: a tooth (as any of the four front teeth of the human upper or lower jaw) for cutting


in·​ci·​sor | \ in-ˈsī-zər How to pronounce incisor (audio) \

Medical Definition of incisor

: a front tooth adapted for cutting especially : any of the eight cutting human teeth that are located between the canines with four in the lower and four in the upper jaw

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More from Merriam-Webster on incisor

Rhyming Dictionary: Words that rhyme with incisor

Spanish Central: Translation of incisor

Nglish: Translation of incisor for Spanish Speakers

Britannica English: Translation of incisor for Arabic Speakers Encyclopedia article about incisor

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