致死量(ちしりょう)

ちしりょう
noun
lethal dose; fatal dose
1. lethal dose; fatal dose
The amount of a substance, such as a drug, toxin, or radiation, that is sufficient to cause death.
致死量(ちしりょう)を超(こ)える薬物(やくぶつ)を摂取(せっしゅ)した。
A lethal dose of the drug was ingested.
カフェインにも致死量(ちしりょう)があることを知(し)っていますか。
Did you know that caffeine also has a lethal dose?
検査(けんさ)の結果(けっか)、体内(たいない)から致死量(ちしりょう)に近(ちか)い量(りょう)の毒物(どくぶつ)が検出(けんしゅつ)された。
The examination revealed a near-lethal amount of poison in the body.

A medical and scientific term composed of 致死(ちし) (causing death) and 量(りょう) (amount/dose). Used in pharmacology, toxicology, and forensic contexts.

COMMON COLLOCATIONS:

  • 致死量(ちしりょう)を超(こ)える: to exceed the lethal dose
  • 致死量(ちしりょう)に達(たっ)する: to reach the lethal dose
  • 半数(はんすう)致死量(ちしりょう): median lethal dose (LD50)

RELATED TERMS:

  • 致死(ちし): lethal, fatal
  • 致命的(ちめいてき): fatal, critical — broader term for anything fatally serious
  • 過剰摂取(かじょうせっしゅ): overdose — excessive intake, not necessarily lethal
  • 中毒(ちゅうどく): poisoning — the condition caused by toxic substances
general
Added 2026.3.30 3:15
20500/20581_chishiryou