hydrophilic means water-loving, but is usually used in the context of substances that are easily wetted, but do not dissolve. So although table salt is technically hydrophilic, the term is not used to describe salt. Concrete, on the other hand is hydrophilic. Wood, cotton, and leather are hydrophilic.
Depending on what aspect of radiation is being measured, different terms are applied: 1  For the amount of radiation being given off by a radioactive material: the conventional unit is curie (Ci) and the SI unit becquerel (Bq).  For radiation absorbed by a person: the conventional unit is rad and the SI unit gray (Gy).
Radiation is energy that comes from a source and travels through space and may be able to penetrate various materials. Light, radio, and microwaves are types of radiation that are called nonionizing.