radiation
[/ˌreɪdiˈeɪʃən/]
nounfemininepl: radiações
radiação
1. The emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles that cause ionization
Exposure to radiation can be dangerous to human health.
A exposição à radiação pode ser perigosa para a saúde humana.
2. Energy transmitted in the form of rays, waves, or particles
Solar radiation heats the Earth's atmosphere.
A radiação solar aquece a atmosfera terrestre.
3. The process of emitting energy in this way
The radiation from the nuclear reactor was carefully monitored.
A radiação do reator nuclear foi cuidadosamente monitorada.
4. A pattern of lines or rays spreading outward from a central point
The radiation pattern of the antenna was studied by engineers.
O padrão de radiação da antena foi estudado pelos engenheiros.
The term 'radiação' is widely used in Brazil in medical contexts (especially radiation therapy/radioterapia), nuclear energy discussions, and environmental discussions. In the USA, radiation safety and awareness are important topics in hospitals, research facilities, and public health discourse. The word carries scientific connotations and is typically used in formal or technical contexts in both countries.
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