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core

core

53 7.2
A long tube of soil or rock taken by drilling for study
  • noun
  • /kɔr/
  • Specialized
translation icon : testigo (de perforación)
  • Core samples have shown that beneath this bedrock is shale similar to the permeable shale in the Van der Lip disaster.
  • core samples
  • ice core
  • soil core

In fact, here's what the cores look like with a drill.

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Examples

  • The low point of the expedition occurred when I attempted to get core samples of the trees.

    Academic text (1991)
  • All right, place the core very carefully.

  • - Trying to take a core sample.

  • Several traces of the metal had been found in the core samples in that area.

    Fiction book (2000)
  • For now, the Expedition 336 scientists are busy working with the cores that they recovered during the cruise.

    Academic text (2012)
  • In situ soil moisture percentages were measured at the location where the soil cores were collected.

    Academic text (2008)
  • The team collected a core sample from the soil to analyze its composition.

  • Geologists often extract a core sample to study the layers of rock beneath the surface.

  • During the drilling process, they carefully retrieved a core sample to assess the area's geological history.

Idioms

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

11 6.5

Very loyal and dedicated to a group or cause

10 3.5

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

5 5.4

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

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

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

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

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

How Big

core
  • Specialized
53 7.2
specimen
107 4.1
sample
2.3
coupon
  • Specialized
1 8.0
scrap
179 2.1

Surface Forms

core singular
cores plural

Etymology

The word core comes from Latin cor 'heart'; a geological core is a long, thin sample that shows the 'inside' or 'heart' of rock or ice, so scientists use it to study the past.