Level 3 Level 5

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data
information in a form that can be stored and used, especially on a computer
debatable
things that are * are not certain because people have different opinions about them
debate
discussion of a particular subject that often continues for a long time and in which people express different opinions
debate
to discuss a subject formally when you are trying to make a decision or find a solution
decade
a period of 10 years
decline
a decrease in the quality, quantity, or importance of sth
decline
1) to decrease in quantity or importance 2) (formal) to say no politely when sb invites you sw, offers you sth, or wants you to do sth
deduce
(formal) to use the knowledge and information you have in order to understand sth or form an opinion about it
deduction
the process of using the knowledge or information you have in order to understand something or form an opinion, or the opinion that you form
define
to describe sth correctly and thoroughly, and to say what standards, limits, qualities etc it has that make it different from other things
definite
clearly known, seen, or stated [= clear]
definitely
without any doubt [= certainly]
definition
the clear edges, shapes, or sound that something has
by definition
if sth has a particular quality * *, it must have that quality because all things of that type have it
definitive
a * book, description etc is considered to be the best and cannot be improved
demonstrable
able to be shown or proved
demonstrate
to show or prove something clearly
demonstration
an event at which a large group of people meet to protest or to support something in public
demonstrative
willing to show that you care about sb
demonstrator
someone who takes part in a demonstration
denial
a statement saying that sth is not true
denote
(formal) to mean sth
deny
to say that sth is not true, or that you do not believe sth
depress
to make someone feel very unhappy
depression
a medical condition that makes you very unhappy and anxious and often prevents you from living a normal life
derivation
(technical) the origin of something, especially a word
derivative
sth that has developed or been produced from sth else
derive
to get sth, especially an advantage or a pleasant feeling, from sth
design
the art or process of making a drawing of sth to show how you will make it or what it will look like
design
to make a drawing or plan of sth that will be made or built
despite
used to say that sth happens or is true even though something else might have prevented it [= in spite of]
detect
to notice or discover sth, especially sth that is not easy to see, hear etc
detection
when sth is found that is not easy to see, hear etc, or the process of looking for it
detective
a police officer whose job is to discover information about crimes and catch criminals
detector
a machine or piece of equipment that finds or measures sth
deviate
to change what you are doing so that you are not following an expected plan, idea, or type of behaviour
deviation
a noticeable difference from what is expected or acceptable
device
a machine or tool that does a special job [= gadget]
devote
to use all or most of your time, effort etc in order to do something or help someone [= dedicate]
devoted
1) giving sb or sth a lot of love and attention 2) dealing with, containing, or being used for only one thing [= dedicated]
devotion
the strong love that you show when you pay a lot of attention to sb or sth
differentiate
to recognize or express the difference between things or people [= distinguish]
dimension
a part of a situation or a quality involved in it [= aspect]
diminish
to become or make something become smaller or less [= reduce]
diminution
(formal) a reduction in the size, number, or amount of sth
discrete
clearly separate
discretion
the ability and right to decide exactly what should be done in a particular situation
discretionary
not controlled by strict rules, but decided on by someone in a position of authority
discriminate
to unfairly treat a person or group of people differently from other people or groups
disestablish
(formal) to officially decide that a particular church is no longer the official church of your country
displace
to take the place or position of something or someone [= replace]
displacement
(formal) when a group of people or animals are forced to leave the place where they usually live
display
1) an arrangement of things for people to look at or buy 2) a part of a piece of equipment that shows information, for example a computer screen
display
to show something to people, or put it in a place where people can see it easily
disposable
1) intended to be used once or for a short time and then thrown away 2) available to be used
disposal
1) when you get rid of sth 2) (technical) the sale of sth you own such as a house, a business, or land
disposal
(formal) the way in which an amount of money is used
dispose
(formal) to arrange things or put them in their places
dispose of
to get rid of sth, especially something that is difficult to get rid of
disproportion
(formal) a situation in which two or more things are not equal in amount, level etc
disproportionate
too much or too little in relation to sth else
dissimilar
not the same [≠ similar]
distinct
clearly different or belonging to a different type
distinction
a clear difference or separation between two similar things
distinctive
having a special quality, character, or appearance that is different and easy to recognize
distinctly
1) clearly 2) very
distort
to change the appearance, sound, or shape of sth so that it is strange or unclear
distort
to report sth in a way that is not completely true or correct
distribute
to share things among a group of people, especially in a planned way [= give out]
distribution
the act of sharing things among a large group of people in a planned way
distributive
connected with distribution
diverse
very different from each other
diversity
the fact of including many different types of people or things
diversify
if a business, company, country etc *ies, it increases the range of goods or services it produces
document
1) a piece of paper that has official information on it 2) a piece of written work that is stored on a computer
document
to write about something, film it, or take photographs of it, in order to record information about it
documentation
official documents, reports etc that are used to prove that something is true or correct
domain
(formal) an area of activity, interest, or knowledge, especially one that a particular person, organization etc deals with
domestic
relating to or happening in one particular country and not involving any other countries
domesticate
to make an animal able to work for people or live with them as a pet
domesticated
* animals are able to work for people or live with them as pets
domesticated
sb who is * enjoys spending time at home and doing work in the home
dominance
the fact of being more powerful, more important, or more noticeable than other people or things
dominant
more powerful, important, or noticeable than other people or things
dominate
to control sb or sth or to have more importance than other people or things
draft
a piece of writing or a plan that is not yet in its finished form
draft
to write a plan, letter, report etc that will need to be changed before it is in its finished form
draft version
a piece of writing that is not yet in its finished form
drama
a play for the theatre, television, radio etc, usually a serious one, or plays in general
drama
an exciting event or set of events, or the quality of being exciting
dramatic
1) great and sudden 2) exciting or impressive
dramatist
someone who writes plays, especially serious ones [= playwright]
dramatize
1) to make a book or event into a play or film 2) to make a situation seem more exciting, terrible etc than it really is
duration
the length of time that sth continues
dynamic
full of energy and new ideas, and determined to succeed
dynamic
the way in which things or people behave, react, and affect each other