lethal dose

https://doi.org/10.1351/goldbook.L03500
Amount of a substance or physical agent (radiation) that causes death when taken into the body by a single absorption (denoted by LD).
See also:
lethal concentration
Source:
PAC, 1993, 65, 2003. (Glossary for chemists of terms used in toxicology (IUPAC Recommendations 1993)) on page 2063 [Terms] [Paper]