het·​er·​ol·​o·​gous | \ ˌhe-tə-ˈrä-lə-gəs How to pronounce heterologous (audio) \

Definition of heterologous

: derived from a different species

Other Words from heterologous

heterologously adverb

Examples of heterologous in a Sentence

Recent Examples on the Web Authorization of this booster possibility would then offer even more heterologous booster possibilities. Bruce Y. Lee, Forbes, 15 July 2022 For example, the cure rate of Clostridioides difficile with heterologous FMT is up to 90 percent. Sarah Sloat, NBC News, 30 June 2022 Of the 98 participants, 50 went on to get another Pfizer-BioNTech vaccine dose for their booster (homologous booster), while the remaining 48 received a Moderna booster (heterologous booster). Beth Mole, Ars Technica, 13 May 2022 Scientists have long suspected that heterologous prime-boosts sometimes work better than two identical doses. New York Times, 19 Oct. 2021 Nowhere among them was a question about whether J&J vaccine recipients ought to get a heterologous boost, in other words a boost with a different vaccine. Helen Branswell, STAT, 15 Oct. 2021 This strategy is technically known as a heterologous prime-boost. New York Times, 19 Oct. 2021 There’s no provision on the schedule for a vote on heterologous boosting. Helen Branswell, STAT, 15 Oct. 2021 India’s drugs authority has now approved a full-length study into a heterologous prime-boost of the two vaccines that make up most of India’s Covid-19 immunisation programme. Manavi Kapur, Quartz, 12 Aug. 2021 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'heterologous.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of heterologous

1893, in the meaning defined above

History and Etymology for heterologous

heter- + -logous (as in homologous)

Learn More About heterologous

Time Traveler for heterologous

Time Traveler

The first known use of heterologous was in 1893

See more words from the same year

Dictionary Entries Near heterologous



heterologous graft

See More Nearby Entries 

Statistics for heterologous

Last Updated

24 Jul 2022

Cite this Entry

“Heterologous.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/heterologous. Accessed 10 Aug. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

More Definitions for heterologous


het·​er·​ol·​o·​gous | \ ˌhet-ə-ˈräl-ə-gəs How to pronounce heterologous (audio) \

Medical Definition of heterologous

1 : derived from a different species heterologous DNAs heterologous transplants — compare autologous, homologous sense 2a
2 : characterized by cross-reactivity a heterologous vaccine protects against pathogenic antigens that cross-react with antibodies induced by antigens in the vaccine

Other Words from heterologous

heterologously adverb


Test Your Vocabulary

Challenging Words You Should Know

  • hedgehog reading a book
  • Often used to describe “the march of time,” what does inexorable mean?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

Universal Daily Crossword

A daily challenge for crossword fanatics.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!