Pronunciation: (kûr'nl),[key] —n., v.,-neled, -nel•ing or (esp. Brit.)-nelled, -nel•ling.
—n. 1. the softer, usually edible part contained in the shell of a nut or the stone of a fruit.
2. the body of a seed within its husk or integuments.
3. a whole seed grain, as of wheat or corn.
4. South Atlantic States.the pit or seed of a peach, cherry, plum, etc.
5. the central or most important part of anything; essence; gist; core: His leadership is the kernel of the organization. 6. Math.the set of elements that a given function from one set to a second set maps into the identity of the second set.
7. Also called rumpf.Physical Chem.the remainder of an atom after the valence electrons have been removed.