1) Cold culprit 2) Picornavirus 
Rhinovirus B Rhinoviruses (from the Greek (gen.) `nose`) are the most common viral infective agents in humans and are the predominant cause of the common cold. Rhinovirus infection proliferates in temperatures between 33–35 °C (91–95 °F), the temperatures found in the nose. Rhinovirus is a species in the genus Enterovirus of the Picornavir.....
a group of viruses capable of causing common colds in human adults and children. They belong to the family Picornaviridae (see picornavirus). The ... [3 related articles]
<virology> Picornaviridae that largely infect the upper respiratory tract. Include the common cold virus and foot and mouth disease virus. ... (18 Nov 1997) ... 
the rhinoviruses, a genus of the family Picornaviridae that can cause the common cold and other upper respiratory ailments; over 100 different strains infect humans.(ri´no-vi″rәs) any virus of the genus Rhinovirus.
Picornaviridae that largely infect the upper respiratory tract. Include the common cold virus and foot-and-mouth disease virus.
Type: Term Pronunciation: rī′nō-vī′rŭs Definitions: 1. A genus of acid-labile viruses (family Picornaviridae) of worldwide distribution, with a single-stranded positive sense RNA genome, associated with the common cold in humans. There are more than 110 antigenic types, formerly classified as M strains (culturable in...
[n] - any of a group of picornaviruses that are responsible for many upper respiratory infections
rhinovirus Any of a subgroup of the picornaviruses considered to be etiologically associated with the common cold and certain other upper respiratory ailments.
noun any of a group of picornaviruses that are responsible for many upper respiratory infections