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Definition of kernel

kernel

/ˈkɝːnəl/
ker · nel

Plural:kernels
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kernel Lexical Profile

kernel Game Scores & Validity

• noun

1

The central, most essential, or fundamental part of a subject, idea, or problem.

Example

"Despite the exaggerations in his story, there was a kernel of truth at its core."


2

The softer, usually edible part contained within the shell of a nut or the stone of a fruit, or a whole seed of a cereal plant.

Example

"She carefully cracked the tough walnut shell to extract the intact kernel inside."


3

The core foundational program of a computer's operating system that maintains complete control over everything in the system, including hardware interactions.

Example

"If a critical error occurs in the Linux kernel, the entire system may panic and require a reboot."

Synonyms
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Antonyms
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Word Nuance & Usage

The word 'kernel' is a commonly confused homophone with the military rank 'colonel', though they have entirely different etymologies and meanings.

• Rhymes for kernel

Word Origin & Etymology

From Old English 'cyrnel', a diminutive of 'corn' (meaning seed or grain) combined with the diminutive suffix '-el', literally translating to 'small seed'.

Cite this Entry


Wordmom. (2026). Definition of Kernel. In Wordmom Dictionary. Retrieved Oct 12, 2026, from https://wordmom.com/dictionary/kernel
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