sentineled or sentinelled; sentineling or sentinelling
1
: to watch over as a sentinel
2
: to furnish with a sentinel
3
: to post as sentinel
Synonyms
Examples of sentinel in a Sentence
Noun
a lone sentinel kept watch over the fort
Recent Examples on the Web
James D’angelo, Foreign Affairs, 16 Apr. 2019
Seems dolphins are one of the major biological sentinels of our plastic pollution.
—Susanne Rust, Los Angeles Times, 22 Oct. 2024
Bruce Y. Lee, Forbes, 17 Sep. 2024
Think delicate epiphytic orchids curling around the knobby trunks of waving palms; white clapboard cottages with shutters in shades of salmon, sunshine, and seafoam; and a stretch of private beach with a lighthouse sentinel on the horizon.
—Caroline Rogers, Southern Living, 30 June 2023
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Noun
Terrified of outside pressures, the framers of the U.S. Constitution worked in strict privacy, boarding up the windows of Independence Hall and stationing armed sentinels at the door.
—James D’angelo, Foreign Affairs, 16 Apr. 2019
Seems dolphins are one of the major biological sentinels of our plastic pollution.
—Susanne Rust, Los Angeles Times, 22 Oct. 2024
Verb
While penicillin was a game-changer, microorganisms were able to quickly adapt developing mutations to neutralize the effects of this antibiotic, sort of like those robot sentinels in the movie X-Men: Days of Future Past.
—Bruce Y. Lee, Forbes, 17 Sep. 2024
Think delicate epiphytic orchids curling around the knobby trunks of waving palms; white clapboard cottages with shutters in shades of salmon, sunshine, and seafoam; and a stretch of private beach with a lighthouse sentinel on the horizon.
—Caroline Rogers, Southern Living, 30 June 2023
See all Example Sentences for sentinel
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Cite this Entry
“Sentinel.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sentinel. Accessed 22 Dec. 2024.
Copy CitationMedical Definition
sentinel
adjective
sen·ti·nel
ˈsent-ᵊn-əl 
: being an individual or part of a population potentially susceptible to an infection or infestation that is being monitored for the appearance or recurrence of the causative pathogen or parasite
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