Oh, the germinal idea…
The germinal idea can be anything that gets your creative juices flowing. It can be a place, a person, an odd event.
– James N. Frey, The Key
germinal \ JUR-muh-nl \ , adjective;
1. Being in the earliest stage of development.
2. Of or pertaining to a germ or germs.
3. Of the nature of a germ or germ cell.
Origin: Germinal is derived from the Latin word germen meaning “sprout, bud.”