Definition from Wiktionary, the free dictionary
- (UK) IPA: /ˈkɜː(ɹ).nəl/, X-SAMPA: /"k3:(r).n@l/
- Rhymes: -ɜː(r)nəl
- (US) IPA: /ˈkɝnəl/, X-SAMPA: /"k3`n@l/
- Homophone: colonel
kernel (plural kernels)
- The core, center, or essence of an object or system.
- The central (usually edible) part of a nut, especially once the hard shell has been removed.
- A single seed or grain, especially of corn or wheat.
- (US) The stone of certain fruits, such as peaches or plums.
- (computing) The central part of many computer operating systems which manages the system's resources and the communication between hardware and software components.
- (mathematics, algebra) Those elements, in the domain of a function, which the function maps to zero.
- If a function is continuous then its kernel is a closed set.
- (mathematics, fuzzy set theory) The set of members of a fuzzy set that are fully included (i.e., whose grade of membership is 1).
Derived terms 
core or essence of an object or system
central part of a nut
single seed of corn or wheat
(USkernel) stone of certain fruits, such as peaches or plums
(computingkernel) central part of many computer operating systems
(mathematicskernel, algebraCategory:en:Algebra) set of elements mapped to zero
(mathematicskernel, fuzzy set theory) Set of members of a fuzzy set that are fully included
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