line of defense
noun phrase
: a way of defending oneself
the body's first line of defense against illness
Examples of line of defense in a Sentence
Recent Examples on the Web
This first line of defense is especially important as fake apps become more sophisticated in hiding their true intentions.
—
Kurt Knutsson, FOXNews.com, 21 Nov. 2025
Across the country, medical examiner and coroner offices—our first line of defense in understanding what’s killing Americans—are unable to detect many of the compounds fueling the next phase of the overdose crisis.
—Dr. Shravani Durbhakula, Time, 19 Nov. 2025
Probiotics in miso can also stimulate the production of secretory IgA, an antibody that strengthens the gut lining and acts as a first line of defense against potentially harmful germs, like certain bacteria and viruses.
—Lauren Manaker, SELF, 18 Nov. 2025
One of the main changes is a loss of the innate immune system's naive T cells, the first line of defense against pathogens, and an increase in the adaptive immune system's memory T cells.
—New Atlas, 16 Nov. 2025
See All Example Sentences for line of defense
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Kurt Knutsson, FOXNews.com, 21 Nov. 2025
Across the country, medical examiner and coroner offices—our first line of defense in understanding what’s killing Americans—are unable to detect many of the compounds fueling the next phase of the overdose crisis.
—Dr. Shravani Durbhakula, Time, 19 Nov. 2025
Probiotics in miso can also stimulate the production of secretory IgA, an antibody that strengthens the gut lining and acts as a first line of defense against potentially harmful germs, like certain bacteria and viruses.
—Lauren Manaker, SELF, 18 Nov. 2025
One of the main changes is a loss of the innate immune system's naive T cells, the first line of defense against pathogens, and an increase in the adaptive immune system's memory T cells.
—New Atlas, 16 Nov. 2025
See All Example Sentences for line of defense
Cite this Entry
“Line of defense.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/line%20of%20defense. Accessed 29 Nov. 2025.
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