1: κόκκος
(Strong's #2848 — Noun Masculine — kokkos — kok'-kos )

denotes "a grain," Matthew 13:31; 17:20; Mark 4:31; Luke 13:19; 17:6; John 12:24 (AV, "corn"); 1—Corinthians 15:37 (where the RV has "a ... grain," to distinguish it from "grain" in general). See CORN.