1. of or relating to the Dog Star (Sirius) or the period when it rises and sets with the sun
Usage: astronomy; often capitalized in historical contexts
2. of or relating to the hottest period of summer, traditionally associated with the rising of Sirius
Usage: literary; archaic

Examples

• The canicular period in ancient Egypt was marked by the heliacal rising of Sirius.
• Astronomers studied the canicular star to predict seasonal changes.
• The canicular heat of August made outdoor work difficult.
• Ancient civilizations tracked the canicular cycle for agricultural purposes.
• The canicular days brought intense summer temperatures to the region.