CCDS, or Consensus Coding Sequence, is a term mostly used in the field of genomics to refer to a standardized set of coding exons that are present in most human and mouse genes. As such, the concept of CCDS is a very specific one, with few synonyms that match its meaning precisely. One possible synonym might be "canonical exons", as CCDS exons are considered to be the most commonly expressed exons in the human and mouse genomes. Other related terms might include "conserved coding regions", "standardized coding sequences", or "core protein-coding regions". However, none of these synonyms capture the exactness and common agreement on the specific set of exons as CCDS does.