c.1440, "plot where plants are raised from seeds," from L. seminarium "plant nursery," figuratively, "breeding ground," from seminarius "of seed," from semen (gen. seminis) "seed" (see semen). Meaning "school for training priests" first recorded 1581; commonly used for any school (especially academies for young ladies) from 1585 to 1930s. Seminarian "seminary student" is attested from 1584.