yellow dwarf


Definition of yellow dwarf

: any of several plant diseases of cereal grasses (such as oats and barley), onions, potatoes, tomatoes, or tobacco that are characterized by yellowing and stunting and are caused by viruses

Examples of yellow dwarf in a Sentence

Recent Examples on the Web TOI-849b's host star is a late G-class yellow dwarf, a little cooler and approximately 2 billion years older than our Sun, with about nine-tenths its mass and radius. Jim Salter, Ars Technica, "Exoplanet in the hot-Neptune desert is the first of its kind," 6 July 2020 Our sun, a yellow dwarf, is currently in the main sequence stage of its life. Jennifer Leman, Popular Mechanics, "Our Swollen Sun Will Someday Shatter Everything in the Asteroid Belt," 17 Feb. 2020 While the Earth’s bulging depends on how its oceans rub against the ocean floor, the exact structure of tides on WASP-12b’s yellow dwarf star remains mysterious. Charlie Wood, Popular Science, "This pitch-black exoplanet is spiraling toward its doom," 2 Jan. 2020 Now a yellow dwarf, the sun is currently halfway through its lifespan. Jennifer Leman, Popular Mechanics, "The Sun: The Life-Giving Magnet in the Sky," 3 Nov. 2019 Its star, a red dwarf, is considerably smaller and cooler than our sun, a yellow dwarf, and its atmosphere is also different than ours. Washington Post, "Water, temperature right for life at another star’s planet," 11 Sep. 2019

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

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First Known Use of yellow dwarf

1928, in the meaning defined above

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The first known use of yellow dwarf was in 1928

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Cite this Entry

“Yellow dwarf.” Dictionary, Merriam-Webster, Accessed 22 Oct. 2020.

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