4000 Essential English Words 2e 4 (2nd Edition) 영영 Unit 9

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excel

v. a subject or activity means to be very good at it
Jenny excels at playing the piano.

sociology

n. the study of human society, its organizations, and problems
Sociology teaches that people’s problems are a result of their society.

relativity

n. a set of ideas about time and space developed by Albert Einstein
Relativity teaches that light travels at the same speed throughout the universe.

minimum

adj. the smallest amount
What is the minimum temperature in winter in this area?

bachelor

n. an unmarried man
Since he was a bachelor, Jason did his shopping by himself.

analytic

adj. it is related to logic and reasoning
The analytic article criticized the new plan and presented one of its own.

cognitive

adj. it is related to learning and knowing things
After her physical examination, her cognitive skills were tested.

diploma

n. a certificate proving that someone has completed their studies
After four years of college, Mary finally had a diploma.

keen

adj. student could have solved that math problem
Only a keen student could have solved that math problem.

integral

adj. an important part of the whole
She is an integral member of our team.

intellect

n. a person's ability to understand things easily
She was known for her quick and strong intellect as well as her beauty.

psychology

n. the study of how the brain affects our thought and actions
The psychology of seeing is a fascinating subject.

theoretical

adj. based on theory rather than experience
His conclusion was only theoretical and not meant to be publicized.

area

n. a reasonably large place
He was very familiar with the local area.

collision

n. the act of two things hitting into each another
The collision between the two cars created a loud noise.

radioactive

adj. then it lets out, or is related to, radiation
Radioactive states can be very bad for anyone’s health.

competent

adj. they are able to think or act successfully
Competent employees are much better than unknowledgeable ones.

geology

n. the study of the Earth's natural structures and how they change
Because he studied geology, he knew how the mountains were formed.

weak

adj. not strong and healthy
She is still weak after the illness.

job

n. the work you do to earn money
He now has a high-paying job.