monocyte
noun
mono·cyte
ˈmä-nə-ˌsīt 
: a large white blood cell with finely granulated chromatin dispersed throughout the nucleus that is formed in the bone marrow, enters the blood, and migrates into the connective tissue where it differentiates into a macrophage
Examples of monocyte in a Sentence
Recent Examples on the Web
In the second study, monocyte cells were isolated from a different cohort of adults and the immune cells exposed to glucose, maltodextrin and fructose to investigate cellular activity.
—
New Atlas, 27 June 2025
Most interestingly, though, using mouse models, the team found that the psychedelics psilocybin and MDMA blocked the monocytes from collecting in the brain, thus hampering the immune system's ability to spark fear and create an inflammatory response.
—Michael Franco
may 06, New Atlas, 6 May 2025
The experiment uncovered that just one night of sleep deprivation resulted in a disruption in immune cells, or monocytes, in these participants, similar to what was observed in obese participants.
SLEEPY DURING THE DAY?
—Angelica Stabile, Fox News, 26 Feb. 2025
Blood samples were taken to measure cytokines and chemokines, signaling proteins that help regulate inflammation and immune activity, and monocytes, white blood cells that help fight infection and heal damage.
—New Atlas, 25 Feb. 2025
Blood vessels become increasingly fragile, allowing for the leakage of the likes of inflammation mediators and some immunity cells, like monocytes or macrophages.
—Jennifer Weil, WWD, 14 Jan. 2025
Right after inducing heart attacks in mice, scientists observed increased activity of immune cells called monocytes that can cause increased sleep, but saw no such activity in mice who were left alone.
—Lisa Rapaport, EverydayHealth.com, 1 Nov. 2024
In previous research, scientists who studied a small group of healthy people found that those who slept well had more monocytes than those who slept poorly, underscoring the importance of these immune cells in sleep regulation.
—Lisa Rapaport, EverydayHealth.com, 1 Nov. 2024
For the new study, the team used CD47-blocking nanoparticles that are more targeted towards monocytes and macrophages, two types of immune cell that are associated with inflammation in plaques.
—Michael Irving, New Atlas, 14 Oct. 2024
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New Atlas, 27 June 2025
Most interestingly, though, using mouse models, the team found that the psychedelics psilocybin and MDMA blocked the monocytes from collecting in the brain, thus hampering the immune system's ability to spark fear and create an inflammatory response.
—Michael Franco
may 06, New Atlas, 6 May 2025
The experiment uncovered that just one night of sleep deprivation resulted in a disruption in immune cells, or monocytes, in these participants, similar to what was observed in obese participants.
SLEEPY DURING THE DAY?
—Angelica Stabile, Fox News, 26 Feb. 2025
Blood samples were taken to measure cytokines and chemokines, signaling proteins that help regulate inflammation and immune activity, and monocytes, white blood cells that help fight infection and heal damage.
—New Atlas, 25 Feb. 2025
Blood vessels become increasingly fragile, allowing for the leakage of the likes of inflammation mediators and some immunity cells, like monocytes or macrophages.
—Jennifer Weil, WWD, 14 Jan. 2025
Right after inducing heart attacks in mice, scientists observed increased activity of immune cells called monocytes that can cause increased sleep, but saw no such activity in mice who were left alone.
—Lisa Rapaport, EverydayHealth.com, 1 Nov. 2024
In previous research, scientists who studied a small group of healthy people found that those who slept well had more monocytes than those who slept poorly, underscoring the importance of these immune cells in sleep regulation.
—Lisa Rapaport, EverydayHealth.com, 1 Nov. 2024
For the new study, the team used CD47-blocking nanoparticles that are more targeted towards monocytes and macrophages, two types of immune cell that are associated with inflammation in plaques.
—Michael Irving, New Atlas, 14 Oct. 2024
Cite this Entry
“Monocyte.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/monocyte. Accessed 15 Jul. 2025.
Copy CitationKids Definition
monocyte
noun
mono·cyte
ˈmän-ə-ˌsīt
: a large white blood cell that is formed in the bone marrow and travels to the connective tissues where it develops into a macrophage
Medical Definition
monocyte
noun
mono·cyte
ˈmän-ə-ˌsīt
: a large white blood cell with finely granulated chromatin dispersed throughout the nucleus that is formed in the bone marrow, enters the blood, and migrates into the connective tissue where it differentiates into a macrophage
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