Home › Words › G › geomicrobiologistgeomicrobiologistgeomicrobiologist · noun — A geologist or microbiologist whose speciality is geomicrobiology.Definition from Wiktionary (CC BY-SA 3.0).EtymologyFrom geo- + microbiologist.nounA geologist or microbiologist whose speciality is geomicrobiology.Definitions & examples from Wiktionary (CC BY-SA 3.0).