modifier
/ˈmɒdɪfaɪə(r)/noun
1- a person or thing that makes partial or minor changes to something修改者, 更改者; 改型者, 改装者。
1.1
- Grammar a word, especially an adjective or noun used attributively, that restricts or adds to the sense of a head noun (e.g. good and family in a good family house)【语法】修饰语（尤指作定语用的形容词或名词, 用于限制或增加中心词的语义, 如a good family house中的good和family）。
1.2
- Genetics a gene which modifies the phenotypic expression of a gene at another locus【遗传】修饰基因。