'kernel' originates from Old English, specifically the word 'cyrnel,' where 'cyrn' meant 'seed' and '-el' was a diminutive suffix.

'cyrnel' transformed into the Middle English word 'kernel,' and eventually became the modern English word 'kernel.'

Initially, it meant 'a small seed or grain,' but over time it evolved into its current meanings of 'central part' and 'edible part of a nut.'