Proto-Indo-European root meaning "to sow."
It forms all or part of: disseminate; inseminate; seed; seme (adj.); semen; seminal; seminar; seminary; semination; sinsemilla; sow (v.); season.
It is the hypothetical source of/evidence for its existence is provided by: Latin serere "to sow;" Old Church Slavonic sejo, sejati; Lithuanian sju, sti "to sow;" Old English sawan "to sow;" Old Prussian semen "seed," Lithuanian smenys "seed of flax," Old Church Slavonic seme, Old High German samo, German Same; Old English sed, sd "that which may be sown; an individual grain of seed."
c. 1600, "conversation, dialogue" (a sense now obsolete), from Latin colloquium "conference, conversation," literally "a speaking together," from com- "together" (see com-) + -loquium "speaking," from loqui "to speak" (from PIE root *tolkw- "to speak"). Also as a legal term; meaning "a meeting for discussion, assembly, conference, seminar" is attested by 1844.
mid-15c., "plot where plants are raised from seeds," from Latin seminarium "plant nursery, seed plot," figuratively, "breeding ground," from seminarius "of seed," from semen (genitive seminis) "seed" (from PIE root *sē- "to sow"). Meaning "school for training priests" first recorded 1580s; commonly used for any school (especially academies for young ladies) from 1580s to 1930s.