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| arboreal | 
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| a. [arboreal] tree-dwelling; treelike; living in trees Learn about the arboreal emblems that represent the provinces and territories of Canada. | 
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| archaeology | 
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| n. [آثار قدیمہ] study of artifacts and relics of early humankind The professor of archaeology headed an expedition to the Gobi Desert in search of ancient ruins. | 
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| arithmetic | 
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| n. [انکگنیتیی] theory of numerical calculations He found a way to set up equations about integers and other constructs in arithmetic. | 
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| array | 
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| v. [سرنی] set out for display or use; place in orderly arrangement He requested to array the whole regiment on the parade ground. | 
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| arsenal | 
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| n. [ہتھیار] storage place for military equipment; a stock of weapons People are forbidden to smoke in the arsenal because a stray spark might set off the munitions stored there. | 
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| artery | 
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| n. [شریان] one of the vessels or tubes which carry either venous or arterial blood from the heart; major transit corridor The Yangtze River is the main artery of traffic in center China. | 
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| articulate | 
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| v. [واضح] speak clearly and distinctly; utter a speech sound; be jointed; make clear or effective The author was trying to articulate that his encrypted file system is effective. | 
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| ascent | 
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| n. [آروہن] upward slope or grade; movement upward An unforgettable 2-hour ascent follows a 30-minute hike up to the base of the ferrate up the cliff. | 
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| assignment | 
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| n. [تفویض] a task that was given to students; job; distribution; appointment I believe that this assignment is the most challenging of them all. | 
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| association | 
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| n. [ایسوسی ایشن] connection, whether of persons or things; a union of persons in a company or society for some particular purpose I benefited a lot from my association with him. | 
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| assorted | 
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| a. [assorted] varied;  consisting of various types mixed together   Watching the large and varied bird population or following assorted trails on horseback. | 
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| assortment | 
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| n. [assortment] variety; collection containing a variety of sorts of things A great assortment of cars was on display. | 
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| assume | 
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| v. [سنبھالنے] suppose; presume; take on; bear He looked at me long and hard: I turned my eyes from him, fixed them on the fire, and tried to assume and maintain a quiet. | 
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| assumption | 
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| n. [گمان] something taken for accepted as true without proof; taking over or taking possession of The young princess made the foolish assumption that the regent would not object to power. | 
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| assure | 
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| v. [گارنٹی] tell someone confidently that something is true; guarantee; convince I know it, and I don't wish to palliate them, I assure you. |