primary root


Definition of primary root

: the root of a plant that develops first and originates from the radicle — see seedling illustration

Examples of primary root in a Sentence

Recent Examples on the Web The primary root cause of humanitarian migration from Central America is the U.S. government. Felipe De La Hoz, The New Republic, 1 Apr. 2021 Arabidopsis thaliana, a small flowering plant that is often used by biologists for plant research, is the star of this video by Daniel von Wangenheim, which shows a new root growing laterally off a primary root. Scientific American, 16 Mar. 2021

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

First Known Use of primary root

1877, in the meaning defined above

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Time Traveler for primary root

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The first known use of primary root was in 1877

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Cite this Entry

“Primary root.” Dictionary, Merriam-Webster, Accessed 16 Jun. 2021.

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