Wiktionary
archaebacterial
a. (context bacteriology English) Of or pertaining to bacteria of the domain Archaea, formerly classified as Archaebacteria
Usage examples of "archaebacterial".
Tony May is analyzing the genomes of archaebacterial species that inhabit the hot, anaerobic waters of hydrothermal vents and deep rocks, looking for highly conserved genes that may have belonged to the universal ancestor of all life on Earth.
On Earth, early microbial life split into eubacteria and archaebacteria, and all multicellular organisms arose from the archaebacterial lineage.