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kernel

Did you mean: kernel, null space (in math), Kernel (computing), Kernel (algebra), seed (in biology), Kernel (statistics), Kernel (category theory), Kernel (set theory), Kernel (matrix) More...

 
Dictionary: ker·nel   (kûr'nəl) pronunciation
 
n.
  1. A grain or seed, as of a cereal grass, enclosed in a husk.
  2. The inner, usually edible seed of a nut or fruit stone.
  3. The most material and central part; the core: “that hard kernel of gaiety that never breaks” (Evelyn Waugh).

[Middle English, from Old English cyrnel.]

kerneled ker'neled adj.
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The nucleus of an operating system. It is the closest part to the machine level and may activate the hardware directly or interface to another software layer that drives the hardware. The kernel orchestrates the entire operation of the computer by slicing time for each system function and each application as well as managing all the computer's resources. It typically resides in memory at all times. See microkernel, monolithic kernel, kernel space and kernel panic.

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Thesaurus: kernel
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noun

  1. A fertilized plant ovule capable of germinating: pip, pit2, seed. See start/end.
  2. A source of further growth and development: bud1, embryo, germ, nucleus, seed, spark1. See start/end.
  3. The most central and material part: core, essence, gist, heart, marrow, meat, nub, pith, quintessence, root1, soul, spirit, stuff, substance. Law gravamen. See be.

 

Whole grains and the meats of nuts and stone fruit pips or pits.

 
Word Tutor: kernel
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pronunciation

IN BRIEF: A seed.

pronunciation Can you put the kernel back in the nut or the broken egg in its shell? — zaadz.com.

Tutor's tip: The officers nicknamed the "colonel" (military rank between lieutenant colonel and brigadier general) "kernel" (part of an ear of corn) for his penchant to eat corn at every meal.

 
Wikipedia: Kernel (mathematics)
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In mathematics, the word kernel has several meanings. Kernel may mean a subset associated with a mapping:

  • The kernel of a mapping is the set of elements that map to the zero element (such as zero or zero vector), as in kernel of a linear operator and kernel of a matrix. In this context, kernel is often called nullspace.
  • More generally, the kernel in algebra is the set of elements that map to the neutral element. Here, the mapping is assumed to be a homomorphism, that is, it preserves algebraic operations, and, in particular, maps neutral element to neutral element. The kernel is then the set of all elements that the mapping cannot distinguish from the neutral element.
  • The kernel in category theory is a generalization of this concept to morphisms rather than mappings between sets.
  • In set theory, the kernel of a function is the set of all pairs of elements that the function cannot distinguish, that is, they map to the same value. This is a generalization of the kernel concept above to the case when there is no neutral element.
  • In set theory, the difference kernel or binary equalizer is the set of all elements where the values of two functions coincide.

Kernel may also mean a function of two variables, which is used to define a mapping:

(T f)(x) = \int_X k(x, x') f(x') \, dx'.
(T f)(x) = \int_X \phi(x - x') f(x') \, dx'.

 
Translations: Kernel
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Dansk (Danish)
n. - kerne

Nederlands (Dutch)
pit, kern, korrel

Deutsch (German)
n. - Kern, Korn
v. - Körner bilden

Ελληνική (Greek)
n. - ψίχα κουκουτσιού, κουκούτσι, πυρήνας, μόνιμο τμήμα λειτουργίας Η/Υ ή προγράμματος, (μτφ.) πεμπτουσία, ουσία
v. - περικλείω σε κέλυφος

Italiano (Italian)
nocciolo, nucleo

Português (Portuguese)
n. - semente (f), parte comestível de uma noz, grão (m) de cereal, cerne (m), parte (f) essencial

Русский (Russian)
зерно, ядро, суть

Español (Spanish)
n. - núcleo, meollo, pipa, pepita, grano, médula, almendra, semilla
v. tr. - encerrar, granar

Svenska (Swedish)
n. - kärna, (vete)korn
v. - hårdna till kärna

中文(简体)(Chinese (Simplified))
仁, 核心, 要点, 粒, 子

中文(繁體)(Chinese (Traditional))
n. - 仁, 核心, 要點, 粒, 子

한국어 (Korean)
n. - 낟알, 열매, 중심부

日本語 (Japanese)
n. - 仁, 粒, 核心, 要点

العربيه (Arabic)
‏(الاسم) جوهر الشي, النواة, لب النواة (فعل) يكون أو يغلف اللب‏

עברית (Hebrew)
n. - ‮גלעין, גרעין, זרע, עיקר, החלק האכיל של פרי או אגוז‬


 
 

Did you mean: kernel, null space (in math), Kernel (computing), Kernel (algebra), seed (in biology), Kernel (statistics), Kernel (category theory), Kernel (set theory), Kernel (matrix) More...


 

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Dictionary. The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2007. Published by Houghton Mifflin Company. All rights reserved.  Read more
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