waktu paruh

Etymology
Compound of 🇰🇲,.

Noun

 * 1) half-life:
 * 2)  The time required for half the nuclei in a sample of a specific isotope to undergo radioactive decay.
 * 3)  In a chemical reaction, the time required for the concentration of a reactant to fall from a chosen value to half that value.
 * 4)  The time it takes for a substance (drug, radioactive nuclide, or other) to lose half of its pharmacological, physiologic, or radiological activity.