Examples are automatically compiled from online sources to
show current usage.Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
In general, red, far-red, and blue wavelengths are most important for plant development—good-quality grow lights will supply at least all three of these wavelengths, or better yet, provide full-spectrum light to more closely mimic natural sunlight.—Rachel Gillett, Martha Stewart, 31 Jan. 2026 This is not the first time that the use of far-red light in farming has been studied.—Dario Sabaghi, Forbes.com, 21 May 2025