Webster's Revised Unabridged Dictionary · 1913

Seminal

Seminal , adjective

[Latin seminalis, from semen, seminis, seed, akin to serere to sow: compare French seminal. See Sow to scatter seed.]

1.
Pertaining to, containing, or consisting of, seed or semen; as, the seminal fluid.
2.
Contained in seed.
3.
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
Collocations (2)
Seminal leaf (Botany) , a seed leaf, or cotyleden.
Seminal receptacle (Zoology) , Same as Spermatheca.

Seminal , noun

A seed. [Obsolete] — Sir T. Browne