AGGREGATE GENOMES. “In 1998, however, a new technology began to emerge that would transform our ability to study prokaryotes: Handelsman et al. coined the term “metagenome” to characterize the collective genomes of all microbes in a soil sample. They proposed to analyze this soil metagenome directly, without first having to culture the organisms in the soil.”
https://standardsingenomics.biomedcentral.com/articles/10.1186/s40793-016-0180-8