1
: not susceptible or responsive
immune to all pleas
especially
: having a high degree of resistance to a disease
immune to diphtheria
2
a
: produced by, involved in, or concerned with immunity or an immune response
immune agglutinins
immune globulins
b
: having or producing antibodies or lymphocytes capable of reacting with a specific antigen
an immune serum
immune
noun
Examples of immune in a Sentence
Recent Examples on the Web
Here, the lining cells sense an invader and release alarms, chemical signals that draw in immune cells and generate oxidative stress.
—
Bill Frist, Forbes.com, 18 Sep. 2025
Models for last season – covering the period from April 2024 to April 2025 – included a worst-case scenario where there was no vaccine recommendation and high immune escape, and a best-case scenario where there was a universal vaccine recommendation and low immune escape.
—Deidre McPhillips, CNN Money, 18 Sep. 2025
Roivant Sciences — The drugmaker popped 11% after the release of positive Phase 3 trial results for its brepocitinibm drug, which aims to treat certain immune and inflammatory diseases.
—Fred Imbert, CNBC, 17 Sep. 2025
Cortisol, which is produced by the adrenal glands and released by the hypothalamus in the brain, impacts many of the body’s systems and plays a key role in regulating immune function, metabolism, inflammatory and stress responses.
—Helen Carefoot, Flow Space, 17 Sep. 2025
See All Example Sentences for immune
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Bill Frist, Forbes.com, 18 Sep. 2025
Models for last season – covering the period from April 2024 to April 2025 – included a worst-case scenario where there was no vaccine recommendation and high immune escape, and a best-case scenario where there was a universal vaccine recommendation and low immune escape.
—Deidre McPhillips, CNN Money, 18 Sep. 2025
Roivant Sciences — The drugmaker popped 11% after the release of positive Phase 3 trial results for its brepocitinibm drug, which aims to treat certain immune and inflammatory diseases.
—Fred Imbert, CNBC, 17 Sep. 2025
Cortisol, which is produced by the adrenal glands and released by the hypothalamus in the brain, impacts many of the body’s systems and plays a key role in regulating immune function, metabolism, inflammatory and stress responses.
—Helen Carefoot, Flow Space, 17 Sep. 2025
See All Example Sentences for immune
Cite this Entry
“Immune.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/immune. Accessed 20 Sep. 2025.
Copy CitationKids Definition
immune
adjective
im·mune
im-ˈyün 
1
: exempt entry 1
immune from punishment
2
a
: not influenced by something
immune to persuasion
b
: having a high degree of resistance to an illness or disease
3
: containing or producing antibodies
Medical Definition
immune
1 of 2 adjective
im·mune
im-ˈyün
1
: not susceptible or responsive
especially
: having a high degree of resistance to a disease
immune to diphtheria
2
a
: having or producing antibodies or lymphocytes capable of reacting with a specific antigen
an immune serum
b
: produced by, involved in, or concerned with immunity or an immune response
immune agglutinins
immune
2 of 2 noun
: an immune individual
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