decay time

noun

The amount of time required for a collection of atoms of a specific radionuclide to decay to a fraction of the initial number, equivalent to 1/e, where e = 2.71828.

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Meanings

noundecay time (countable and uncountable, plural decay times)

plural decay times

  1. countableuncountablenatural sciencesThe amount of time required for a collection of atoms of a specific radionuclide to decay to a fraction of the initial number, equivalent to 1/e, where e = 2.71828.
Cite this entry
APA

decay time. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/decay%20time

MLA

“decay time.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/decay%20time. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “decay time,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/decay%20time.

Source: decay time on Wiktionary, CC BY-SA 4.0.