data n. facts or information used in deciding or discussing sth

debate n. formal argument or discussion of a question, eg at a public meeting or in Parliament, with two or more opposing speakers, and often ending in a vote

decade n. period of ten years

decline v. say `no' to (sth); refuse (sth offered), usu politely

deduce v. ~ sth arrive at (facts, a theory, etc) by reasoning; infer sth

define v. ~ sth state precisely the meaning of (eg words)

definite adj. clear; not doubtful

demonstrate v. ~ sth (to sb) show sth clearly by giving proof or evidence

denote v. be the name, sign or symbol of (sth); refer to

deny v. say that (sth) is not true

depress v. make sad and without enthusiasm

derive v. ~ sth from sth obtain sth from sth; get sth from sth

design n. ~ (for sth) drawing or outline from which sth may be made

despite prep without being affected by

detect v. discover or recognize that (sth) is present

deviate v. ~ from sth stop following

device n. thing made or adapted for a special purpose

devote v. ~ oneself/sth to sb/sth give to sb/sth; dedicate ;

differentiate v. ~ between A and B; ~ A (from B) see or show (two things) to be different; show sth to be different (from sth else)

dimension n. measurement of any sort

diminish v. become smaller or less; decrease

discrete adj. separate; distinct

discriminate v. ~ ~ A from B see or make a difference (between two things)

displace v. move from the usual or correct place

display v. ~ sth put sth on show

dispose v. place(sb/sth) in a suitable way; arrange

distinct adj. easily heard, seen, felt or understood; definite

distort v. pull or twist out of its usual shape

distribute v. ~ sth separate sth into parts and give a share to each person or thing

diverse adj. of different kinds; varied

document n. paper, form, book, etc giving information about sth, evidence or proof of sth

domain n. lands owned or ruled by a nobleman, government, etc

domestic adj. of the home, household or family

dominate v. have control of or a very strong influence on (people, events, etc)

draft n. rough preliminary written version of sth

drama n. play for the theatre, radio or TV

duration n. time during which sth lasts or continues

dynamic adj. of power or forces that produce movement