minimum lethal dose, \(\mathrm{LD}_{\min }\)

https://doi.org/10.1351/goldbook.M03933
Lowest amount of a substance that, when introduced into the body, may cause death to individual species of test animals under a defined set of conditions.
Source:
PAC, 1993, 65, 2003. (Glossary for chemists of terms used in toxicology (IUPAC Recommendations 1993)) on page 2071 [Terms] [Paper]