core
- 01 B1 Intermediate
n.the hard central part of a fruit, such as an apple or pear, that contains the seeds.
n.the central portion of certain fleshy fruits, such as apples or pears, containing the seeds and typically having a tough or fibrous texture.
Simple“She ate the whole apple except for the core.”
In context“After peeling the fruit, the chef used a specialized tool to remove the core without bruising the surrounding flesh.”
- 02 B2 Upper Intermediate
n.the most important or central part of a system, organization, or idea.
n.the foundational or most essential part of an aggregate, system, or abstract concept; the essence.
Simple“The core of the problem is that we don't have enough money.”
In context“At the core of his philosophical argument lies the belief that individual liberty must always outweigh collective security.”
- 03 B2 Upper Intermediate
n.the central part of a planet or star, which is often very hot or solid.
n.the innermost layer of a celestial body, such as the Earth's molten outer core and solid inner core.
Simple“Scientists study the Earth's core to understand the planet's magnetic field.”
In context“The fusion reactions occurring within the star's core generate the immense pressure required to prevent gravitational collapse.”
- 04 C1 Advanced
n.one of the independent processing units in a computer's CPU.
n.an independent processing unit within a central processing unit (CPU) that can execute program instructions.
Simple“This new laptop has a processor with eight cores for faster performance.”
In context“The software is optimized for multi-core architectures, allowing it to distribute heavy workloads across several processing units simultaneously.”
- 05 B2 Upper Intermediate
adj.describing the most important or basic parts of something.
adj.constituting the essential, foundational, or most significant part of a whole.
Simple“Math and English are core subjects that every student must take.”
In context“The company decided to sell its secondary businesses to focus on its core competencies and long-term stability.”
UsageUsually placed before the noun.
SynonymsAntonyms - 06 C1 Advanced
v.to take the center part out of a fruit.
v.to remove the central part or seeds from a fruit; to extract a cylindrical sample from a larger mass.
Simple“You should peel and core the pears before boiling them in the syrup.”
In context“The geologists spent the afternoon coring the glacier to obtain ice samples for climate analysis.”
UsageTransitive verb requiring a direct object.
Synonymshollow outextract
Usage core part · central core · core element