irradiation

Meanings

1. 1
   noun

   the process of exposing a person, organism, food, or material to ionizing radiation

   The seeds underwent gamma irradiation before the genetic analysis began.

2. 2
   noun

   medical treatment in which ionizing radiation is directed at diseased tissue

   Targeted irradiation reduced the size of the tumor.

From Middle French irradiacion and Latin irradiatio, from irradiare ("to shine upon"), based on radius ("ray"). In modern scientific use it is also transparently irradiate + -ion.

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