Peptidomics refers to the large-scale study of peptides, which are short chains of amino acids that play important roles in various biological processes. Some synonyms for peptidomics might include peptidome analysis, peptide profiling, or peptide mass spectrometry. These terms all describe similar techniques for analyzing and characterizing the peptides present in biological samples. Other related terms might include proteomics, which involves the study of proteins on a larger scale, or metabolomics, which focuses on small molecules produced by biological cells. Together, these fields provide valuable insights into the complex biochemical processes that govern life at the cellular level.