Kernel

/ˈkɜrnəl/

Meaning & Definition

noun
The central or most important part of something, typically a hard seed, nut, or grain.
The kernel of the argument is that we need to change our approach to sustainability.
A softer, usually edible part of a seed, nut, or fruit stone contained within its hard shell.
She cracked open the walnut to reveal the rich, brown kernel inside.
The part of a computer operating system that manages core functionalities.
The kernel is responsible for managing memory and processes in the operating system.
A small, usually rounded or spherical unit of a substance.
The popcorn kernels popped into fluffy treats when heated.

Etymology

Middle English, from Old English cyrnel, diminutive of cern (grain), from Proto-Germanic *kernō.

Common Phrases and Expressions

kernel of truth
A small amount of truth in a larger statement.
kernel panic
An error condition occurring in an operating system's kernel.
popcorn kernel
A corn kernel that can pop when heated.

Related Words

nucleus
The central part of an atom, or a central part around which others gather.
seed
The part of a plant that can grow into a new plant.
core
The central or most important part.

Slang Meanings

A tech term for the essential part of a codebase.
The kernel is where all the crucial logic resides in this app.
Referring to a small piece of information that is essential.
Give me the kernel of this story; I don’t need the details.