Recent Examples on the WebFor some time now, it’s been established that the primary root of SARS-CoV-2 transmission is airborne.
William A. Haseltine, Forbes, 2 May 2022 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.