Webster's English Dictionary

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algebra

Cross references:
  1. boolean algebra       
 
al.ge.bra \'al-j*-br*\ \'al-j*-.bra--*st\ n [ML, fr. Ar al-jabr, lit., the 
   reduction] 1a: a generalization of arithmetic in which letters representing 
   numbers are combined according to the rules of arithmetic 1b: a treatise 
   on algebra  2: a mathematical ring whose elements can be multiplied by 
   elements of a sp ecified field in accordance with special rules 3: a 
   logical or set calculus  - al.ge.bra.ist n