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).
The absorbed dose is the amount of energy absorbed per unit weight of the organ or tissue and is expressed in units of gray (Gy). One gray dose is equivalent to one joule radiation energy absorbed per kilogram of organ or tissue weight. Rad is the old and still used unit of absorbed dose.