Sem·i·nal a.
1. Pertaining to, containing, or consisting of, seed or semen; as, the seminal fluid.
2. Contained in seed.
3. Hence: Holding the first place in a series of developed results or consequents; serving as a source, or first principle; giving rise to related ideas or results; germinal; radical; primary; original; as, seminal principles of generation; seminal virtue; a seminal discovery.
The idea of God is, beyond all question or comparison, the one great seminal principle. --Hare.
Seminal leaf Bot., a seed leaf, or cotyleden.
Seminal receptacle. Zool. Same as Spermatheca.