Pronunciation: /dɪˈkeɪ/ Explain

graph of y=2e^(-x)
Figure 1: Decay

Decay refers to the gradual breakdown of an object or substance.[2] Radioactive decay is the breakdown of atoms into smaller and possibly multiple atoms which releases radiation.

Decay can be modeled mathematically using exponential functions and half life formula.


  1. McAdams, David E.. All Math Words Dictionary, decay. 2nd Classroom edition 20150108-4799968. pg 54. Life is a Story Problem LLC. January 8, 2015. Buy the book
  2. Linda Almgren Kime, Judy Clark, Beverly K. Michael. Explorations in College Algebra. 4th edition. pp 279-283,298-309. Wiley. November 16, 2007. Last Accessed 7/3/2018. Buy the book

More Information

  • McAdams, David E.. Exponent. All Math Words Encyclopedia. Life is a Story Problem LLC. 3/12/2009.

Cite this article as:

McAdams, David E. Decay. 12/21/2018. All Math Words Encyclopedia. Life is a Story Problem LLC.

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Revision History

12/21/2018: Reviewed and corrected IPA pronunication. (McAdams, David E.)
7/3/2018: Removed broken links, updated license, implemented new markup, implemented new Geogebra protocol. (McAdams, David E.)
1/22/2010: Added "References". (McAdams, David E.)
1/22/2009: Added figure 1. (McAdams, David E.)
8/1/2008: Corrected spelling error. (McAdams, David E.)
5/1/2008: Initial version. (McAdams, David E.)

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