seminal

US /ˈsem.ə.nəl/
UK /ˈsem.ə.nəl/
"seminal" picture
1.

strongly influencing later developments

:
His seminal work on quantum physics changed the field forever.
The book is considered a seminal text in feminist theory.
2.

of, relating to, or containing semen

:
The study focused on the composition of seminal fluid.
Certain glands contribute to the production of seminal plasma.