Meaning of KERNEL in English

noun Etymology: Middle English, from Old English cyrnel, diminutive of corn Date: before 12th century a fruit seed, the inner softer part of a seed, fruit stone, or nut, a whole seed of a cereal , a central or essential part ; germ , a subset of the elements of one set (as a group) that a function (as a homomorphism) maps onto an identity element of another set

Merriam Webster. Explanatory English dictionary Merriam Webster.      Толковый словарь английского языка Мерриам-Уэбстер.