Definition of geoponic in US English:

geoponic

noun

rare
  • A writer on agriculture.

adjective

rare
  • Of or relating to agriculture; agricultural.

Origin

Early 17th century; earliest use found in John Selden (1584–1654), lawyer and historical and linguistic scholar. As noun from post-classical Latin geoponicus writer on agriculture, use as noun of masculine of geoponicus, adjective.