lone star tick

noun

: an ixodid tick (Amblyomma americanum) of the southern, central, and eastern U.S. that attacks mammals and birds, is a vector of several diseases (such as Rocky Mountain spotted fever and ehrlichiosis), and in which the adult female has a single white spot on the back

Examples of lone star tick in a Sentence

Recent Examples on the Web
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Suffolk County officials are also monitoring the spread of the lone star tick, which has continued expanding across the region. — CBS News, 6 Oct. 2026 Once confined to the Southeast, lone star ticks spread from Maine to Oklahoma in recent years as the climate warmed and as a decline in hunting led to an explosive growth in the number of whitetail deer, where lone stars find mates and breed. — Bob Drogin, Los Angeles Times, 4 Oct. 2026 Adult female lone star ticks have a single white dot on their backs. — Eva Flowe, Charlotte Observer, 11 Aug. 2026 Unlike the Bourbon virus, which doesn’t respond to antibiotics, Lyme disease is caused by bacteria spread by lone star ticks. — Meena Thiruvengadam, Travel + Leisure, 11 Aug. 2026 See All Example Sentences for lone star tick

Word History

First Known Use

1896, in the meaning defined above

Time Traveler
The first known use of lone star tick was in 1896

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Cite this Entry

“Lone star tick.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lone%20star%20tick. Accessed 9 Oct. 2026.

Medical Definition

: an ixodid tick of the genus Amblyomma (A. americanum) of the southern, central, and eastern United States that attacks mammals and birds, is a vector of several diseases (as Rocky Mountain spotted fever, ehrlichiosis, and anaplasmosis), and in which the adult female has a single white spot on the back

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