Kernel

almendra

(central part of a nut)

granelo

((computing) central part of many computer operating systems)

grano

(single seed of corn or wheat)

hueso

((US) stone of certain fruits, such as peaches or plums)

núcleo

(core or essence of an object or system)

núcleo

(central part of a nut)

núcleo

((US) stone of certain fruits, such as peaches or plums)

núcleo

((computing) central part of many computer operating systems)

núcleo

((mathematics, algebra) set of elements mapped to zero)