Background for kernel

kernel

/ˈkɜːnəl/ /ˈkɝnəl/

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noun

The core, center, or essence of an object or system.

Examples :

"the kernel of an argument"

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noun

The central (usually edible) part of a nut, especially once the hard shell has been removed.

Examples :

"After cracking open the walnut, Sarah carefully extracted the kernel and ate it. "

food plant part agriculture

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noun

A single seed or grain, especially of corn or wheat.

Examples :

"The farmer carefully planted each kernel of corn in the soil. "

seed plant food agriculture part biology

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noun

The stone of certain fruits, such as peaches or plums.

Examples :

"After eating the juicy plum, I carefully removed the kernel and threw it away. "

fruit plant seed

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noun

A small mass around which other matter is concreted; a nucleus; a concretion or hard lump in the flesh.

Examples :

"The doctor found a small kernel of hardened tissue in the patient's throat. "

body medicine mass

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noun

The central part of many computer operating systems which manages the system's resources and the communication between hardware and software components.

Examples :

"The Linux kernel is open-source."

computing system technology electronics machine part technical structure internet device function organization service info

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noun

The core engine of any complex software system.

Examples :

"The operating system's kernel manages all the computer's basic functions. "

computing technology system structure machine technical part

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noun

A function used to define an integral transform.

Examples :

"The Dirichlet kernel convolved with a function yields its Fourier series approximation."

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noun

A set of pairs of a mapping's domain which are mapped to the same value.

Examples :

"In Mrs. Davis's class, the kernel of the function that assigned grades to students based on test scores would include all students who received a B, because they were all mapped to the same grade. "

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noun

For a given function (especially a linear map between vector spaces), the set of elements in the domain which are mapped to zero; (formally) given f : X → Y, the set {x ∈ X : f(x) = 0}.

Examples :

"If a function is continuous then its kernel is a closed set."

math logic function computing science technical

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noun

For a category with zero morphisms: the equalizer of a given morphism and the zero morphism which is parallel to that given morphism.

Examples :

"In the category of vector spaces and linear transformations, the kernel of a linear transformation from one vector space to another is the set of vectors in the first vector space that are mapped to the zero vector in the second. "

math logic theory abstract

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noun

(fuzzy set theory) The set of members of a fuzzy set that are fully included (i.e., whose grade of membership is 1).

Examples :

"The kernel of students who received a perfect score on the exam was very small. "

theory math computing logic

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noun

The human clitoris.

Examples :

"My sister's anatomy textbook had a diagram of the clitoris, also known as the kernel. "

anatomy body organ sex human physiology

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noun

The nucleus and electrons of an atom excluding its valence electrons.

Examples :

"The scientist studied the atom's kernel to understand its fundamental structure. "

physics chemistry part element