kernel
Language: English
Part of speech: noun
Pronunciation: ipa: /ˈkɜː.nəl/
ipa: /ˈkɝ.nəl/
note: Indic, rhotic
ipa: /ˈkərnəl/
note: without the fern–fir–fur merger
ipa: /ˈkɛrnəl/
note: Indic, non-rhotic
ipa: /ˈkɜnəl/
homophone: colonel (most accents)
rhymes: -ɜː(ɹ)nəl
Forms: form: kernels
Etymology: From Middle English kernel, kirnel, kürnel, from Old English cyrnel, from Proto-West Germanic *kurnil, diminutive of Proto-Germanic *kurną (“seed, grain, corn”), equivalent to corn + -le. Cognate with Yiddish קערנדל (kerndl), Middle Dutch kernel, cornel, Middle High German kornel. Related also to Old Norse kjarni (“kernel”).
Senses: examples: text: the kernel of an argument
synonyms: word: crux
word: gist
word: bowels
word: brass tacks
word: core
word: crux
word: essence
word: gist
word: drift
word: guts
word: gravamen
word: heart
word: heart and soul
word: heartstring
word: heartstrings
word: inwardness
word: kernel
word: marrow
word: meat
word: moral of the story
word: nitty-gritty
word: nub
word: nuts and bolts
word: pith
word: punctum saliens
word: quintessence
word: soul
word: spirit
word: stuff
word: substance
word: tenor
glosses: The core, center, or essence of an object or system.
topics: biology
botany
natural-sciences
glosses: The central (usually edible) part of a nut, especially once the hard shell has been removed.
topics: biology
botany
natural-sciences
glosses: A single seed or grain, especially of corn or wheat.
topics: biology
botany
natural-sciences
glosses: The stone of certain fruits, such as peaches or plums.
glosses: A small mass around which other matter is concreted; a nucleus; a concretion or hard lump in the flesh.
examples: text: The Linux kernel is open-source.
topics: computing
engineering
mathematics
natural-sciences
physical-sciences
sciences
antonyms: userland
glosses: The central part of many computer operating systems which manages the system's resources and the communication between hardware and software components.
topics: computing
engineering
mathematics
natural-sciences
physical-sciences
sciences
glosses: The core engine of any complex software system.
topics: computing
engineering
mathematics
natural-sciences
physical-sciences
programming
sciences
glosses: The simplified input to an algorithm that has undergone kernelization.
examples: text: The Dirichlet kernel convolved with a function yields its Fourier series approximation.
topics: calculus
mathematics
sciences
glosses: A function used to define an integral transform.
examples: text: If a function is continuous then its kernel is a closed set.
topics: mathematics
sciences
set-theory
glosses: 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).
raw_tags: of a function f
topics: algebra
group-theory
mathematics
sciences
antonyms: support
meronyms: root
zero
glosses: The set of elements of the domain of f which are mapped to an identity element.
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).
raw_tags: of a group homomorphism f
of a morphism f between algebraic structures
topics: algebra
mathematics
sciences
antonyms: support
meronyms: root
zero
glosses: The set of elements of the domain of f which are mapped to an identity element.
The set of elements of R which are mapped to the additive identity 0 of S.
qualifier: ring theory
raw_tags: of a ring homomorphism f
of a morphism f between algebraic structures
topics: algebra
linear-algebra
mathematics
sciences
antonyms: support
meronyms: root
zero
glosses: The set of elements of the domain of f which are mapped to an identity element.
The set of elements of M which are mapped to the additive identity 0 of N.
raw_tags: of a linear transformation f
of a morphism f between algebraic structures
topics: category-theory
computing
engineering
mathematics
natural-sciences
physical-sciences
sciences
glosses: The equalizer of f and the zero morphism from X to Y, denoted operatorname kerf.
raw_tags: of a morphism f
topics: category-theory
computing
engineering
mathematics
natural-sciences
physical-sciences
sciences
glosses: The equalizer of f and the zero morphism from X to Y, denoted operatorname kerf.
The source of operatorname kerf, denoted operatorname Kerf.
raw_tags: of a morphism f
topics: mathematics
sciences
qualifier: fuzzy set theory
glosses: The set of members of a fuzzy set that are fully included (i.e., whose grade of membership is 1).
examples: text: 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.
ref: 2014, Karyn Gerrard, Irene Preston, Lotchie Burton, et al: Summer Heat: 10 Spicy Romances That Sizzle:
glosses: The human clitoris.
examples: text: 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.
ref: 1916, Gilbert N. Lewis, “The Atom and The Molecule”, in Journal of the American Chemical Society, 38(4) p 768:
topics: chemistry
natural-sciences
physical-sciences
glosses: The nucleus and electrons of an atom excluding its valence electrons.
Derived terms: word: cokernel
word: enkernel
word: exokernel
word: grape kernel
word: KERNAL
word: kernelate
word: kernel corn
word: kernel cowry
english: Nucleolaria nucleus
translation: Nucleolaria nucleus
word: kernel cowrie
word: kernel function
word: kernel hacker
word: kernelisation
word: kernelization
word: kernelize
word: kernelless
word: kernelly
word: kernel of truth
word: kernel pair
word: kernel panic
word: kernel sentence
word: kernel space
word: multikernel
word: nanokernel
word: palm kernel
word: palm kernel oil
word: pine kernel
word: positive-definite kernel
word: subkernel
word: tree kernel
word: waxing kernel