致 死 量(ちしりょう)

ちしりょう

noun

lethal dose; fatal dose

formalhealth science

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 words

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

Related Words

Related: 致命的(ちめいてき) (fatal, critical)

Related: 過剰摂取(かじょうせっしゅ) (overdose)

Related: 中毒(ちゅうどく) (poisoning)

general

Added 2026.3.30 3:15 · Revised 2026.9.2 13:02

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