'Seed' shares PIE *seh- (to sow) with 'season' (sowing-time) and 'seminar' (seed-bed for ideas).
A flowering plant's unit of reproduction, capable of developing into another such plant; the beginning or source of something.
From Old English 'sǣd' (seed, that which is sown), from Proto-Germanic *sēdiz (seed, the thing sown), from PIE *seh₁- (to sow, to scatter seed). This root is one of the most foundational agricultural terms in the Indo-European lexicon, spreading across dozens of daughter languages with remarkable semantic consistency. Latin 'sēmen' (seed) derives from the same PIE base via *seh₁-men-, giving