root hair


: a filamentous extension of an epidermal cell near the tip of a rootlet that functions in absorption of water and minerals see seedling illustration

Examples of root hair in a Sentence

Recent Examples on the Web Beyond that, an almost 2 1/2-pound carrot with long, scraggly root hairs sat across from a slightly heftier tomato with clusters of small, wart-like appendages. Emily Mesner, Anchorage Daily News, 3 Sep. 2023 This particular genus is small and slow, and bears a striking resemblance to plant root hairs. Corinne Purtill, Los Angeles Times, 13 July 2023 No bacteria, no root hairs! Jeff Lowenfels, Anchorage Daily News, 7 Apr. 2023 Along with the seven members, Siwa celebrated their spunk with rainbow hair tinsel and to-the-root hair gems. Chelsea Avila, Allure, 24 Aug. 2022 Once the tree roots reach the edge, the leading root hairs grow through but then are pinched by the fabric. Adrian Higgins, idahostatesman, 20 Dec. 2017 When your plant is transplanted, it can be stressed if there is damage to root hairs, as this will impede water absorption until the plant can replace them. Rita Perwich,, 5 Oct. 2017 See More

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

Word History

First Known Use

1841, in the meaning defined above

Time Traveler
The first known use of root hair was in 1841

Dictionary Entries Near root hair

Cite this Entry

“Root hair.” Dictionary, Merriam-Webster, Accessed 29 Nov. 2023.

Kids Definition

root hair

: one of the threadlike outgrowths near the tip of a rootlet that function in absorption of water and minerals

More from Merriam-Webster on root hair

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