Dimethylation is a term frequently used in biochemistry and molecular biology to refer to a specific chemical modification process that involves the addition of two methyl groups to the target molecule. However, there are several synonyms that can be used to describe this process depending on the context. These include the terms bis-methylation, double methylation, and di-methylating. Furthermore, when discussing the specific targets of this modification, additional terms such as histone dimethylation, DNA dimethylation, and protein dimethylation may be used. Understanding the appropriate use of these synonyms is critical for effective communication and precise scientific terminology.