infectious

英語（米国） (en-US) 英語（イギリス） (en-GB)

形容詞

病気 人物 感情・行動 くだけた表現

(pathology, of an illness) Caused by an agent that enters the host's body (such as a bacterium, virus, parasite, or prion); often, also, transmitted among hosts via any of various routes (for example, contact, droplet-borne, airborne, waterborne, foodborne, fomite-borne, or bloodborne).

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The doctor explained that the patient's fever was the result of an infectious illness that required immediate treatment.

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意味（1）

(pathology, of an illness) Caused by an agent that enters the host's body (such as a bacterium, virus, parasite, or prion); often, also, transmitted among hosts via any of various routes (for example, contact, droplet-borne, airborne, waterborne, foodborne, fomite-borne, or bloodborne).

Cancer is usually not infectious.

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意味（2）

(pathology, of a person) Able to infect others.

Despite feeling better, the patient is still infectious.

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意味（3）

(of feelings and behaviour) Spreading quickly from one person to another.

Her enthusiasm for work can be really infectious.

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意味（4）

(informal) Memorable and invoking excitement or interest.

Pop music is more infectious than elevator music.

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more infectious （ 比較級 ）

most infectious （ 最上級 ）