Science, Tech, Math › Science Parent Nuclide Definition Share Flipboard Email Print Science Chemistry Chemical Laws Basics Molecules Periodic Table Projects & Experiments Scientific Method Biochemistry Physical Chemistry Medical Chemistry Chemistry in Everyday Life Famous Chemists Activities for Kids Abbreviations & Acronyms Biology Physics Geology Astronomy Weather & Climate by Anne Marie Helmenstine, Ph.D. Updated March 08, 2017 Definition: A parent nuclide is a nuclide that decays into a specific daughter nuclide during radioactive decay.Examples: Na-22 decays into Ne-22 by β+ decay. Na-22 is the parent nuclide and Ne-22 is the daughter nuclide. citecite this article Format mla apa chicago Your Citation Helmenstine, Anne Marie, Ph.D. "Parent Nuclide Definition." ThoughtCo, Jun. 12, 2014, thoughtco.com/definition-of-parent-nuclide-605477. Helmenstine, Anne Marie, Ph.D. (2014, June 12). Parent Nuclide Definition. Retrieved from https://www.thoughtco.com/definition-of-parent-nuclide-605477 Helmenstine, Anne Marie, Ph.D. "Parent Nuclide Definition." ThoughtCo. https://www.thoughtco.com/definition-of-parent-nuclide-605477 (accessed May 21, 2018). copy citation Continue Reading