Meanings
nounLD50 (plural LD50s)
plural LD50s
- medicineThe amount of a substance required to kill half of a given population; a measure of toxicity.
Synonyms: semilethal dose
Synonyms & antonyms
nounThe amount of a substance required to kill half of a given population; a measure of toxicity.
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Also see
Origin
Abbreviation of lethal dose 50%.
Full word history & related roots →Translations
Chinese Mandarin 半數致死量 /半数致死量
- 半數致死量 /半数致死量 (bànshù zhìsǐliàng)Translations
French DL50, dose létale 50
- DL50Translations
- dose létale 50Translations
- dose létale médianeTranslations
Japanese 半数致死量
- 半数致死量 (hansū chishiryō)Translations
Korean 반수 치사량
- 반수 치사량 (bansu chisaryang)Translations
Persian متوسط دوز کشنده
- متوسط دوز کشندهTranslations
Russian ЛД50
- ЛД50 (LD50)Translations
Cite this entry
APA
LD50. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/LD50
MLA
“LD50.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/LD50. Accessed November 3, 2026.
Chicago
WatkinsX Dictionary, s.v. “LD50,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/LD50.
Source: LD50 on Wiktionary, CC BY-SA 4.0.