Gennesis \ge-nne-sis\ as a girl's name (also used as boy's name Gennesis), is a variant of Genesis (Hebrew), and the meaning of Gennesis is "origin, birth".

The baby name Gennesis sounds like Gennesiss, Jennasis, Jenesis, Genisis, Genesiss and Genesies. Other similar baby names are Genessa, Geneesta, Jennis and Jennessa.