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Vocabulary Study Online by Level
Vocabulary Study Online
Vocabulary Study Online By Level (VSOBL) is a Fast, Reliable, and Handy tool to prepare English exam vocabulary. (Available for all VIP accounts: US$2/Month). It has built-in word lists: 6000 IELTS words, 6000 TOEFL words, 5000 GRE words, and 3000 SAT words. You can load them by level with one click.
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n. sour; water-soluble compounds having a sour taste; quality of being sarcastic, bitter, or scornful


Spelling Word: acid
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n. study of how objects move through the air or water


Spelling Word: aerodynamics
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n. a vehicle that can fly, such as an airplane, helicopter, balloon


Spelling Word: aircraft
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n. silvery ductile metallic element


Spelling Word: aluminum
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n. official approbation; endorsement; an act of approving


Spelling Word: approval
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n. upward slope or grade; movement upward


Spelling Word: ascent
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a. unbalanced; uneven;  having parts on either side or half that do not match  


Spelling Word: asymmetrical
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n. the number that is represented as a one followed by 9 zeros


Spelling Word: billion
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n. something produces a result; the basis for an action or response; a reason


Spelling Word: cause