c. 1300, sēdinge, "the production of seed;" 1540s, "the sowing of or with seed," verbal noun from seed (v.).
late 14c., "of or pertaining to seed or semen, of the elements of reproduction," from Old French seminal (14c.) and directly from Latin seminalis "of or belonging to seed; good for seed," from semen (genitive seminis) "seed" (from PIE root *sē- "to sow"). Figurative sense ("having the properties of a seed") is attested by 1630s, "rudimentary, primary; full of possibilities." Related: Seminally; seminality.
1797, "seed of an apple (or orange)," a shortened form of pipin "seed of a fleshy fruit" (early 14c.), from Old French pepin (13c.), probably from a root *pipp-, expressing smallness (compare Italian pippolo, Spanish pepita "seed, kernel").
1590s, "sown with seed," past-participle adjective from seed (v.). Also "bearing seed," hence "matured, fully grown" c. 1600. Of fruits, "having the seeds removed," by 1921. By 1922 in the sports sense (originally tennis).
"hard seed," 1841, from Dutch pit "kernel, seed, marrow," from Middle Dutch pitte, ultimately from Proto-Germanic *pithan-, source of pith (q.v.).
before vowels spermat-, word-forming element meaning "seed, sperm," used from 1880s in scientific compounds, from Greek sperma (genitive spermatos "seed" of an animal or plant; see sperm).