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Kernel

Noun CEFR C2 Specialized
ˈkɜː.nəl

Definitions

  1. The core, center, or essence of an object or system.
  2. The central (usually edible) part of a nut, especially once the hard shell has been removed.
  3. A single seed or grain, especially of corn or wheat.
  4. The stone of certain fruits, such as peaches or plums.
    US
  5. A small mass around which other matter is concreted; a nucleus; a concretion or hard lump in the flesh.
  6. The central part of many computer operating systems which manages the system's resources and the communication between hardware and software components.
  7. The core engine of any complex software system.
  8. The simplified input to an algorithm that has undergone kernelization.
  9. A function used to define an integral transform.
  10. The set of pairs of elements in the domain of f which are mapped to the same value; the equivalence relation x≡y⟺f(x)=f(y).
  11. The set of elements of the domain of f which are mapped to an identity element.
  12. The set of elements of G which are mapped to the identity of H (usually written as 0 in an additive group and as 1 in a multiplicative group).
  13. The set of elements of R which are mapped to the additive identity 0 of S.
  14. The set of elements of M which are mapped to the additive identity 0 of N.
  15. The equalizer of f and the zero morphism from X to Y, denoted operatorname kerf.
  16. The source of operatorname kerf, denoted operatorname Kerf.
  17. The set of members of a fuzzy set that are fully included (i.e., whose grade of membership is 1).
  18. The human clitoris.
  19. The nucleus and electrons of an atom excluding its valence electrons.

Equivalents

38 more languages
Azərbaycan diliözək
Danskkerne
GaeilgeEithne
ʻŌlelo Hawaiʻiʻanoʻano
עבריתגלעין
हिन्दीबीज
Bahasa Indonesiaintikernel
Kurdîkîvî
Te Reo Māorikākanokikokikokikowhatu
Bahasa Melayuinti
Nederlandsgraan
Svenskakärnakorn
ไทยเม็ด
Українськаядро
Tiếng Việtcốt lõinhạn

Examples

the kernel of an argument
The Linux kernel is open-source.”
The Dirichlet kernel convolved with a function yields its Fourier series approximation.”
“If a function is continuous then its kernel is a closed set.”
Using the blunt end of one of the vibraphone mallets, he pried open her folds. With the balled end of the other, he rhythmically rolled over her kernel.”
“1. In every atom is an essential kernel which remains unaltered in all ordinary chemical changes and which possesses an excess of positive charges corresponding in number to the ordinal number of the group in the periodic table to which the element belongs.”

CEFR level

C2
Mastery
This word is part of the CEFR C2 vocabulary — mastery level.
See all C2 English words →

See also

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