im·​mu·​no·​gen i-ˈmyü-nə-jən How to pronounce immunogen (audio)
ˈi-ˌmyə-nə- How to pronounce immunogen (audio)
: a substance that produces an immune response

Examples of immunogen in a Sentence

Recent Examples on the Web In the case of Moderna, taxpayers in the U.S. invested billions in the development of that immunogen. The Atlantic, 13 Feb. 2021 Recognizing the need for a comprehensive strategy, the funding is going to multidisciplinary groups with expertise in virology and immunology, immunogen design, and innovative vaccine and adjuvant platforms and technologies. Laura Defrancesco, Scientific American, 6 Jan. 2022 Mosaico is based on Imbokodo’s unique mosaic immunogen approach. Tim Fitzsimons, NBC News, 1 Dec. 2019

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'immunogen.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


immuno- + -gen (earlier as a trademark)

First Known Use

1959, in the meaning defined above

Time Traveler
The first known use of immunogen was in 1959

Dictionary Entries Near immunogen

Cite this Entry

“Immunogen.” Dictionary, Merriam-Webster, Accessed 3 Oct. 2023.

Medical Definition


im·​mu·​no·​gen i-ˈmyü-nə-jən How to pronounce immunogen (audio) ˈim-yə-nə- How to pronounce immunogen (audio)
: an antigen that provokes an immune response (as antibody production)

More from Merriam-Webster on immunogen

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