cementum

noun

ce·​men·​tum si-ˈmen-təm How to pronounce cementum (audio)
: a specialized bony layer of connective tissue covering the dentin of the part of a tooth normally within the gum see tooth illustration

Examples of cementum in a Sentence

Recent Examples on the Web In the years sows are pregnant, their teeth will grow a thick cementum layer from gaining so much weight. Katie Hill, Outdoor Life, 28 Sep. 2023 Meanwhile, Matson’s boasts an extremely high level of accuracy in its cementum annuli analysis work. Katie Hill, Outdoor Life, 28 Sep. 2023 An annulus, or dark ring, is formed each winter between the cementum formed in spring and summer growth periods. Alan Clemons, Outdoor Life, 18 Mar. 2021 From the moment a tooth emerges from the gum, cementum starts to form annual layers, similar to a tree's rings. Jack Guy, CNN, 25 Mar. 2020 The researchers are also working with high-resolution CT scans to develop a non-destructive method of studying cementum. Jack Guy, CNN, 25 Mar. 2020 In a similar vein, a substance called cementum protects your teeth’s roots, which contain the pulpy center that holds blood vessels and nerves. Korin Miller, SELF, 18 Apr. 2018 Instead, the tooth bases were caked in cementum, a bony material that affixed the teeth to the jaw, and Caldwell says that the teeth appeared to have been dislodged during fossilization. Michael Greshko, National Geographic, 2 Nov. 2016

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'cementum.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

New Latin, from Latin caementum

First Known Use

1842, in the meaning defined above

Time Traveler
The first known use of cementum was in 1842

Dictionary Entries Near cementum

Cite this Entry

“Cementum.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cementum. Accessed 19 Apr. 2024.

Kids Definition

cementum

noun
ce·​men·​tum si-ˈment-əm How to pronounce cementum (audio)
: an outside bony layer that covers the part of the tooth normally within the gum

Medical Definition

cementum

noun
ce·​men·​tum si-ˈment-əm How to pronounce cementum (audio)
: a specialized external bony layer covering the dentin of the part of a tooth normally within the gum

called also cement

compare dentin, enamel

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