The Collaborative International Dictionary
Seminal \Sem"i*nal\, a. [L. seminalis, fr. semen, seminis, seed, akin to serere to sow: cf. F. seminal. See Sow to scatter seed.]
Pertaining to, containing, or consisting of, seed or semen; as, the seminal fluid.
Contained in seed.
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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. (Zo["o]l.) Same as Spermatheca.