🔑 The main part 🖥️ CPU unit 🌍 Central part 🧪 A sample cylinder 💾 Old memory ring 🍏 To remove center 🧲 Magnetic bar

core

3 7.7

A bar of iron put inside a coil of wire to make the coil stronger

noun
/kɔr/

Specialized

: núcleo

Second, the entire electrode and lead wire were wound and mounted around the polypropylene core for durability.
iron core

I have a winding and a core usually.

Examples

This inductor has a ferrite core that enhances its magnetic field when electricity flows through it.
So they just use two bars here that have a metal core and then kind of a rubber outside.
So that's the iron core of the magnet.
Those armor-piercing rounds contain a magnetic steel core.

The Adam Project (2022)
An iron core with a forge-welded steel edge, so you get the flex and strength of the iron with the extreme cutting power of the steel.

Reclaiming the Blade (2009)
In fact, we should be able to pick up the magnetic fields from such high current pulse using an inductor with a ferrite core like this.
The technician installed a new soft iron core inside the coil to improve its performance.
To increase the coil's inductance, we need to replace the damaged core with a more efficient material.

Idioms

to its core

4 5.6

In a way that changes someone or something very deeply and completely

rotten to the core

Offensive

4 8.1

Completely dishonest and morally bad in every part

Compounds

hard-core

11 6.5

Very loyal and dedicated to a group or cause

core group

10 3.5

A small group of people who are most important in a larger organization or activity

hard core

5 5.4

A small group of members who are very loyal and always support it

core strength

3 3.4

Strength in the muscles around your stomach and back that helps you stay steady and move

hard-core

3 7.5

Unwilling to change bad habits or beliefs

core drill

Specialized

1 6.1

A tool that cuts out a round piece from hard materials like concrete or rock

magnetic core

Archaic

1 8.6

A small ring in old computers that stores one piece of information

magnetic core memory

Archaic

1 8.3

A group of tiny magnetic rings used in old computers to store data

hard-core

Jargon

1 7.9

A game mode where death means permanent loss of progress

core bit

Specialized

7.8

A hollow cutting cylinder used in a drill to remove a sample of rock or concrete

core blower

Specialized

7.9

A machine that uses compressed air to pack sand into a box to make sand shapes for molds

core dump

Specialized

7.7

A file that shows what is in a computer's memory when a program crashes to help find errors

core histone

Specialized

8.3

A protein that DNA wraps around inside cells

core memory

Archaic

8.1

An old kind of computer storage that uses small magnetic rings to hold data

core memory

5.5

A very important thing someone remembers that shapes who they are and their choices

core shooter

Specialized

9.0

A machine that makes sand shapes for metal casting by blowing sand into a mold

core shooting machine

Specialized

9.7

A machine in a metal workshop that forces sand into a mould to make cores

demon core

Specialized

9.9

A small dangerous mass of radioactive metal used in early US tests that caused fatal accidents

Surface Forms

core singular

cores plural

Etymology

The word core comes from Latin cor 'heart'; in coils and transformers the core is the metal bar in the middle that makes the magnetic field stronger, so it acts like the 'heart' of the device.