1
a
: a military line formed by the most advanced tactical combat units
also
: front sense 2a(2)
b
: an area of potential or actual conflict or struggle
2
: the most advanced, responsible, or visible position in a field or activity
front·line
ˈfrənt-ˌlīn 
1
: relating to, being, or involved in a front line
frontline ambulances
2
: first-rate
frontline teachers
Examples of front line in a Sentence
Noun
These researchers are on the front line of defense against cancer.
She has been working on the front lines to educate the poor.
Adjective
if I'm having brain surgery, I want it done at a frontline hospital
Recent Examples on the Web
Tom Sanderson, Forbes.com, 22 June 2025
Jonathan David leads the front line, fresh off yet another stellar season in Europe, while Ali Ahmed, Ismaël Koné, and Tajon Buchanan provide the midfield creativity and pace that can slice through defenses.
—Kilty Cleary, MSNBC Newsweek, 21 June 2025
David Brennan, ABC News, 19 June 2025
President Trump and Elon Musk appeared together one last time in the Oval Office on Friday, marking the exit of the world’s richest man from his frontline political role.
—Niall Stanage, The Hill, 30 May 2025
See All Example Sentences for front line
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Noun
Completing the front line will be Rodrygo and a Vinicius Jr. who was criticized back home for still not being his best against opposition hailing from the Pro League which he’s been linked with a big money move to.
—Tom Sanderson, Forbes.com, 22 June 2025
Jonathan David leads the front line, fresh off yet another stellar season in Europe, while Ali Ahmed, Ismaël Koné, and Tajon Buchanan provide the midfield creativity and pace that can slice through defenses.
—Kilty Cleary, MSNBC Newsweek, 21 June 2025
Adjective
Any loss of supply could prove deadly for frontline Ukrainian units.
—David Brennan, ABC News, 19 June 2025
President Trump and Elon Musk appeared together one last time in the Oval Office on Friday, marking the exit of the world’s richest man from his frontline political role.
—Niall Stanage, The Hill, 30 May 2025
See All Example Sentences for front line
Cite this Entry
“Front line.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/front%20line. Accessed 5 Jul. 2025.
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