Noun
English Wikipedia has an article on:serovarWikipedia
serovar (plural serovars)
A group of microorganisms characterised by a specific set of antigens.
Serotypes are usually put into subspecies groups after the genus and species, with the serovars/serotypes capitalized, but not italicized: An example is Salmonella enterica serovar Typhimurium. Source: Internet
The serovar, or serotype, is a classification of Salmonella into subspecies based on antigens that the organism presents. Source: Internet