deer tick


Definition of deer tick 

: an ixodid tick (Ixodes scapularis synonym I. dammini) of the eastern U.S. and Canada that transmits the bacterium causing Lyme disease

called also black-legged tick

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Illustration of deer tick

Examples of deer tick in a Sentence

Recent Examples on the Web

Only one type of tick, Ixodes scapularis – commonly known as the deer tick or blacklegged tick – transmits Lyme disease. Milwaukee Journal Sentinel, "Reducing your risk of Lyme disease as the threat increases," 10 July 2018 These are different ticks from the transmitters of Lyme disease, which are deer ticks, also called black-legged ticks. Anna Groves, Milwaukee Journal Sentinel, "Don't panic over first Rocky Mountain spotted fever death in Wisconsin, but be careful," 12 July 2018 Tick paralysis can be caused by several species of ticks, including deer ticks (which can also carry Lyme disease) and dog ticks (which can carry Rocky Mountain Spotted Fever). Amanda Macmillan,, "After Her Daughter Was Paralyzed by a Tick, This Mom's Warning Is Going Viral on Facebook," 11 June 2018 Lyme disease is an infection caused by a bacterium, Borellia burgdorferi, that is carried by deer ticks. Jennifer Walter, Milwaukee Journal Sentinel, "The Tick App offers resources to identify, remove ticks as part of Lyme disease study," 3 July 2018 Just the FAQs An Indiana University program that monitors disease-carrying pests has found many more deer ticks that carry Lyme disease than previously thought to exist in the southern and central parts of the state. Shari Rudavsky, Indianapolis Star, "IU study: We have more ticks here that carry Lyme disease than thought," 24 May 2018 Recent reports about an apparent uptick in cases of Powassan virus—a rare but dangerous virus also carried by deer ticks—also have health officials and outdoor enthusiasts concerned. Amanda Macmillan,, "After Her Daughter Was Paralyzed by a Tick, This Mom's Warning Is Going Viral on Facebook," 11 June 2018 As for deer ticks, Fonseca said Lyme disease is still a huge issue in New Jersey, which is seeing about 3,500 cases a year. Frank Kummer,, "New Jersey's first 'tick blitz' census shows disease-carrying pest is spreading," 6 June 2018 Lyme Disease As the Mayo Clinic reports, Lyme disease is an illness caused by bacteria transmitted through the bites of infected black-legged ticks or deer ticks — usually ones that are attached to the skin for more than 36 hours. Emma Sarran Webster, Allure, "What You Should Know About the Rise of Insect-Spread Diseases," 3 May 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'deer tick.' 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 deer tick

1982, in the meaning defined above

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Last Updated

6 Sep 2018

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The first known use of deer tick was in 1982

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More Definitions for deer tick

deer tick


English Language Learners Definition of deer tick

: a very small insect found in the eastern U.S. and in Canada that usually feeds on deer and that can give the person or animal it bites various diseases (such as Lyme disease)

deer tick

\ ˈdi(ə)r- \

Medical Definition of deer tick 

: a tick of the genus Ixodes (I. scapularis synonym I. dammini) that transmits the bacterium causing Lyme disease

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the setting in which something occurs

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