What is another word for half life?
Pronunciation: [hˈɑːf lˈa͡ɪf] (IPA) 
The term "half life" refers to the amount of time it takes for a substance or quantity to decrease by half. Synonyms for the term include "decay rate," "degradation time," "radiation half-life," and "half-time decay." In the field of pharmacology, "elimination half-life" is often used to describe the rate at which a drug or substance is metabolized and excreted from the body. Other synonyms for "half life" may depend on the context or substances being referred to, such as "isotopic half-life" in reference to nuclear decay or "carbon dating half-life" for determining the age of artifacts.
