core Definition

  • 1the central or most important part of something
  • 2the tough central part of various fruits, containing the seeds
  • 3the basic or most important part of a subject or issue

Using core: Examples

Take a moment to familiarize yourself with how "core" can be used in various situations through the following examples!

  • Example

    The core of the problem is a lack of communication.

  • Example

    The Earth's core is made up of molten iron and nickel.

  • Example

    She ate the apple but left the core on the plate.

  • Example

    The core curriculum includes math, science, and English.

core Synonyms and Antonyms

Antonyms for core

Idioms Using core

  • a small, committed group of people who form the central part of a larger movement or organization


    The core group of volunteers worked tirelessly to organize the charity event.

  • the internal temperature of the human body, typically around 98.6 degrees Fahrenheit (37 degrees Celsius)


    The doctor took his core temperature to check for a fever.

  • a specific area of expertise or skill that is essential to the success of an individual or organization


    Effective communication is a core competency for any manager.

Phrases with core

  • core values

    the fundamental beliefs or principles that guide the behavior and decision-making of an individual or organization


    Honesty and integrity are core values of our company.

  • the strength of the muscles in the abdomen, lower back, and pelvis that support the spine and improve posture


    Yoga can help improve your core strength.

  • the central part of an apple that contains the seeds


    She threw the apple core in the compost bin.


Summary: core in Brief

The term 'core' [kɔːr] refers to the central or most important part of something, such as the core of the Earth or the core curriculum. It can also refer to the tough central part of fruits like apples. 'Core' extends into phrases like 'core values,' denoting fundamental beliefs, and idioms like 'core group,' referring to a small, committed group of people.

How do native speakers use this expression?