English word exogen comes from English -gen (A producer of something, e.g. hydrogen.), English exo- (Outside, external.)
| Dictionary entry | Language | Definition |
|---|---|---|
| -gen | English (eng) | A producer of something, e.g. hydrogen. |
| exo- | English (eng) | Outside, external. |
| exogen | English (eng) | (botany) A plant characterized by wood, bark and pith, the wood forming a layer between the other two, and growth only occurring on the outside. |