innate immunity

noun

Medical Definition of innate immunity

: immunity possessed by a group (as a species or race) that is present in an individual at birth prior to exposure to a pathogen or antigen and that includes components (as intact skin, salivary enzymes, neutrophils, natural killer cells, and complement) which provide an initial response against infection

called also natural immunity

— compare acquired immunity, active immunity, passive immunity

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Cite this Entry

“Innate immunity.” The Merriam-Webster.com Medical Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/medical/innate%20immunity. Accessed 9 December 2019.

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