Unit 3: catalyst,n. a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change. a person or thing that precipitates an event:the prime minister's speech acted as a catalyst for debate clarify, verb (clarifies, clarifying, clarified) 1 make (a statement or situation) less confused and more comprehensible:the report managed to clarify the government's position ongoing,adj. continuing; still in progress:ongoing negotiations rapid,adj. happening in a short time or at a great rate:the country's rapid economic decline 1 (of an action) characterized by great speed:they made a rapid exit (usually rapids)n. a fast-flowing and turbulent part of the course of a river. encompass,v. 1 [with object] surround and have or hold within:this area of London encompasses Piccadilly to the north and St James's Park to the south include comprehensively:no studies encompass all sectors of medical care encompassment,n. alleviate,v. make (suffering, deficiency, or a problem) less severe:he couldn't prevent her pain, only alleviate it. Measures to alleviate unemployment ambiguity,n. 2 the quality of being open to more than one interpretation; inexactness:we can detect no ambiguity in this section of the Act[count noun] :ambiguities in such questions are potentially very dangerous depict,v. represent by a drawing, painting, or other art form. portray in words; describe:youth is depicted as a time of vitality and good health conform,v. comply with rules, standards , or laws:the kitchen does not conform to hygiene regulations the changes were introduced to conform with international classifications (of a person) behave according to socially acceptable conventions or standards:the pressure to conform 3 be similar in form or type; agree:the countryside should conform to a certain idea of the picturesque review ,v. assess (something) formally with the intention of instituting change if necessary, survey or evaluate (a subject or past events):in the next chapter we review a number of recent empirical studies view or inspect again:all slides were then reviewed by one pathologistlegitimacy,n. 1 conformity to the law or to rules:refusal to recognize the legitimacy of both governments (with reference to a child) the quality of being legitimate:disputes over the legitimacy of heirs 2 ability to be defended with logic or justification; validity:it is difficult to judge the legitimacy of the rumour cloud,v. 4 become less clear, blur discrepancy, n. (plural discrepancies) an illogical or surprising lack of compatibility or similarity between two or more facts:there's a discrepancy between your account and his rely un/upon,v. depend on with full trust or confidence:I know I can rely on your discretion be dependent on:the charity has to rely entirely on public donations 5