Illustration of deer tick
deer tick
noun
: 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
Examples of deer tick in a Sentence
Recent Examples on the Web
The station reported that positive cases of Lyme disease identified in blacklegged, or deer ticks, the most common variety in Connecticut, increased 9% between 2024 and 2025.
—
Allison Gollenberg, Hartford Courant, 9 June 2026
They're commonly called a deer tick.
—Jeff Wagner, CBS News, 9 June 2026
In North America alone, there are around 10 species of native ticks including the American dog tick and the blacklegged or deer tick, which can all spread diseases through a simple bite.
—Lauren Landers, Better Homes & Gardens, 7 June 2026
Both types are spread by deer ticks.
—Kaitlin Sullivan, NBC news, 4 June 2026
See All Example Sentences for deer tick
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Allison Gollenberg, Hartford Courant, 9 June 2026
They're commonly called a deer tick.
—Jeff Wagner, CBS News, 9 June 2026
In North America alone, there are around 10 species of native ticks including the American dog tick and the blacklegged or deer tick, which can all spread diseases through a simple bite.
—Lauren Landers, Better Homes & Gardens, 7 June 2026
Both types are spread by deer ticks.
—Kaitlin Sullivan, NBC news, 4 June 2026
See All Example Sentences for deer tick
Cite this Entry
“Deer tick.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/deer%20tick. Accessed 13 Jun. 2026.
Copy CitationMedical Definition
deer tick
noun
: a tick of the genus Ixodes (I. scapularis synonym I. dammini) that transmits the bacterium causing Lyme disease
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