1. Italian antipope from 1080 to 1100 who was installed as pope by the Holy Roman Emperor Henry IV who consistently opposed efforts at papal reform (died in 1100)
   - Guibert of Ravenna

Type of: antipope

Encyclopedia: Clement III

• umbellar
• umbellate
• umbellifer
• Umbelliferae
• umbelliferous
• umbelliferous plant
• umbelliform
• Umbellularia
• Umbellularia californica
• umber
• umbilical
• umbilical cord
• umbilical hernia
• umbilical vein
• umbilical vesicle
• umbilicate
• umbilicus
• umbles
• umbo
• umbra
• umbrage
• umbrageous
• umbrella
• umbrella arum
• umbrella bird