cumulative median lethal dose

https://doi.org/10.1351/goldbook.15618
Estimate of the total administered amount of a substance that is associated with the death of half a population of animals when the substance is administered repeatedly in doses which are generally fractions of the median lethal dose.
Source:
PAC, 2007, 79, 1153. (Glossary of terms used in toxicology, 2nd edition (IUPAC Recommendations 2007)) on page 1200 [Terms] [Paper]