Definition of Gene 1. (genetics) a segment of DNA that is involved in producing a polypeptide chain; it can include regions preceding and following the coding DNA as well as introns between the exons; it is considered a unit of heredity Noun Synonyms for word "gene" Semanticaly linked words with "gene" Hyponims for word "gene" Lexical Analysis for "gene" genetic of or relating to the science of genetics genetical of or relating to the science of genetics of or relating to or produced by or being a gene genic of or relating to or produced by or being a gene etymology antigene etymology eigengene etymology genelike etymology genomics etymology immunogene etymology intergene etymology metagene etymology minigene etymology oncogene etymology supergene etymological origin of Gen [German] etymologically related genetic etymologically related pangene is derived from gene complex is derived from gene flow is derived from gene frequency is derived from gene pool is derived from gene product is derived from gene therapy is derived from gene-splicing is derived from genes is derived from genetic is derived from geneticist is derived from genetics is derived from genome is derived from genotype is derived from pseudogene