Akademik

reduction
n.
1 the act or an instance of reducing; the process of being reduced.
2 an amount by which prices etc. are reduced.
3 a reduced copy of a picture etc.
4 an arrangement of an orchestral score for piano etc.
Derivatives:
reductive adj.
Etymology: ME f. OF reduction or L reductio (as REDUCE)

Useful english dictionary. 2012.