irradiación
irradiation
noun ee-rrah-dyah-SYOHN Rare
Origin: Latin irradiatio, from irradiare (to shine upon)
Also means
radiation
Usage Note
Irradiación covers both the emission of radiation (physics/medicine) and the spreading of light or heat outward. In a medical context it often refers to radiotherapy or the diffuse spread of pain (irradiación del dolor). Do not confuse it with radiación (radiation as a phenomenon) — irradiación emphasises the act or process of radiating outward.
Examples
"La irradiación del dolor llegó hasta el hombro."
Natural Translation
The radiation of the pain reached the shoulder.

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