On the other hand, E-beam sterilization can be harmful to products containing batteries or electronic components. It can also degrade rubber and polypropylene, but these materials now come in grades that are E-beam compatible, Wilson notes.
A trajectory is the path of an object through space, or the path of life that a person chooses. The prefix tra- is short for trans-, which means across (think transport and transit) and the ject comes from jacere, which means throw and is also the root of the word jet.
Definition of path for English Language Learners. : 1  a track that is made by people or animals walking over the ground. : 2  a track that is specially made for people to walk or ride on. : 3  the area in front of someone or something that is moving.