4000 Essential English Words 2e 4 (2nd Edition) 영영 Unit 16,17,18

acid

n. a chemical that can burn or dissolve other substances
In chemistry class, we mixed two acids together and watched the reaction.

administration

n. the group of people who manage a company or organization
She hoped she could be promoted to a job in administration.

coalition

n. a group of people or organizations working for a common purpose
The companies formed a coalition to make trade less expensive.

ethics

n. moral beliefs or rules about right or wrong
The act of stealing certainly doesn’t go against some people’s ethics.

erosion

n. the destruction of rock
Canyons are formed because rivers of fast-moving water caused erosion.

nectar

n. a sweet liquid produced by flowers
Bees use nectar to make their honey.

notion

n. an idea or belief about something
I had a notion that this route would get us to the beach.

diabetes

n. a medical condition in which a person's body cannot control the level of sugar in their blood
Overweight people are more likely to suffer from diabetes than slimmer ones.

explicit

adj. it is very clear, open, and truthful
The man gave a very explicit account of the car accident.

framework

n. a set of rules or ideas that people use to solve problems
His ideas fit into the framework of a successful business plan.

administrative

adj. describes anything related to managing a company or organization
I work as an administrative assistant to the owner of the company.

biotechnology

n. the use of living parts, such as cells, in industry and technology
Researchers at the biotechnology company use bacteria to make medicine.

eliminate

v. to completely remove it
Wearing a seatbelt eliminates some of the dangers of driving a car.

regime

n. a system of government or management
He was a member of the old regime that had been overthrown in the election.

deceptive

adj. it encourages one to believe something that is false
The scary-looking man’s appearance is deceptive; he is actually very nice.

cholesterol

n. a substance in fat, tissues, and blood of all animals
When people have too much cholesterol, they are at a high risk for heart problems.

mechanism

n. a part of a machine that performs a certain function
I can’t open my car door because the locking mechanism is broke.

straightforward

adj. it is easy to understand
The teacher’s grading system was straightforward and fair.

minimize

v. to reduce something to the lowest possible level
I checked my homework twice to minimize errors I might have made.

manufacture

v. to make it in a factory
My father’s company manufactures steel building materials.

tenant

n. a person who rents property from a landlord
The new tenants moved into the house across the street.

whereby

adv. by which or through which
The mayor had a new bridge built whereby the citizens could cross the river.

mandatory

adj. it is required by law
It’s mandatory that everyone be at least 16 to drive a car in the US.

utility

n. a business that supplies services such as water or electricity
If you don’t pay the utilities, you may have your electricity turned off.

hygienic

adj. clean and unlikely to cause disease
My sister works very hard to keep her entire home as hygienic as possible.

quote

n. what someone has said, including saying how much a piece of work will cost
His writing was full of quotes from Shakespeare.

landlord

n. a man who rents property to a person
The landlord collected everyone’s rent money on the first day of every month.

mortgage

n. a loan for property, especially a home or a business
When they bought their new home, the married couple had to sign a mortgage.

bankrupt

adj. then they are unable to pay their debts
The store had few customers and soon went bankrupt.

mend

v. to fix it when it is broken or damaged
Mother mended the rip in my pants with a piece of cloth.

employ

v. to give work to them
The bookstore employed two full-time clerks.

hygiene

n. the conditions or methods needed for health and cleanliness
People who brush their teeth at least twice a day are practicing good hygiene.

extension

n. a part added to something to give it more time or space
My parents decided to add an extension to our house for the new baby.

furnish

v. to put furniture in a house or room
Most homes are furnished with tables, chairs, and beds.

lease

n. to rent property
When the family first leased the apartment, the rent was very low.

personnel

n. employees in a business.
When business increased, we had to hire more personnel.

expel

v. To expel someone means to force them to leave a place.
Since he would not follow the rules, the principal had to expel the student.

forthcoming

adj. then it is about to happen in the future
Some economists predicted that the forthcoming world economy would be severe.

plumbing

n. the system of pipes used in a home to supply water
When the plumbing stopped working, no one was allowed to use the toilets.

conform

v. to rules or laws is to obey them
The new student had to conform to the school’s dress code.

transplant

n. an operation in which a damaged part of one's body is replaced
The sick child needed a heart transplant to live.

adapt

v. to change in order to deal with a new situation
When he went to the new town, he had to adapt to all the weather changes.

respective

adj. they relate separately to each person just mentioned
The boxers were told to return to their respective corners.

heredity

n. the process of passing on features from parents to children
The boy’s face is similar to his father’s because of heredity.

minimal

adj. very small
My lazy husband does a minimal amount of work around the house.

sequence

n. a number of events or things that come one after another
The dominos fell in a sequence of one after another.

prescribe

n. to tell someone to take it
When I was sick, the doctor prescribed flu medicine for me to take.

transition

n. a process where there is a change from one form to another
The weather gets colder during the transition from summer to autumn.

cellular

adj. it relates to the cells of animals or plants
She used a microscope to see the activity at a cellular level.

dynamic

adj. lively and have creative ideas
The new, dynamic employee came up with a good way to juggle his workload.

pioneer

n. a person who is the first to discover
He was a pioneer of computer programming.

similar

adj. almost the same
I have had a similar experience to the one you described.

internal

adj. it exists or happens inside a person, object, or place
We removed the outer case to reveal the computer’s internal wires.

substitute

n. something or someone means to have them take the place of another
When I ran out of juice, I had to substitute water to drink in the morning.

transfer

n. to move it from one place to another
The family transferred the groceries from the shopping cart to the car.

biological

adj. describes the process of life and living things
In science class, we learned about the biological process of bacterial growth.

rigid

adj. they cannot be changed
Societies often have rigid rules about the way that people are supposed to act.

surgeon

n. a doctor who is trained to do surgery
The surgeon operated on the old man’s heart.

fantasy

n. a pleasant situation that people think about but is unlikely to happen
Becoming an astronaut is a fantasy shared by many children.

therapy

n. treatment for a particular physical or mental illness or condition
After she broke her legs, she used physical therapy to learn how to walk again.