/ˈældʒəbrə / (say 'aljuhbruh)

1. the mathematical art of reasoning about (quantitative) relations by means of a systematised notation including letters and other symbols; the analysis of equations, combinatorial analysis, theory of fractions, etc.
2. any special system of notation adapted to the study of a special system of relationships: algebra of classes.
3. Mathematics
a. the study of mathematical systems possessing operations analogous to those of addition and multiplication.
b. any of various particular systems of the above type: vector algebra; matrix algebra.
{Medieval Latin, from Arabic al jebr, al jabr bone-setting, reunification (referring to the solving of algebraic equations)

Australian English dictionary. 2014.

(by means of letters and other symbols), ,