Although the family name of Belcher is a prominent one in English and American history, it is actually Old French in origin. The ancestor of the Belcher family came to England from France, as part of William the Conqueror's army that came to England in the Norman Conquest of 1066 A.D.
(Microbiology) any of several viruses whose genetic specification is encoded in RNA rather than DNA and that are able to reverse the normal flow of genetic information from DNA to RNA by transcribing RNA into DNA: many retroviruses are known to cause cancer in animals.
Medical Definition of RHINOVIRUS. : any of a genus (Rhinovirus) of single-stranded RNA viruses of the family Picornaviridae including two species (Human rhinovirus A and Human rhinovirus B) having numerous serotypes that affect humans causing respiratory infections including the common cold.efinition of RHINOVIRUS. : any of a genus (Rhinovirus) of picornaviruses including two (species Human rhinovirus A and Human rhinovirus B) having numerous serotypes causing respiratory infections (as the common cold) in humans. ADVERTISEMENT.