1. Having or causing fever

1. Any substance that can cause a rise in body temperature
   - pyrogen

See also: pyrexia

Type of: substance

• old witch grass
• old wives' tale
• old woman
• Old World beaver
• Old World buffalo
• Old World chat
• Old World coot
• Old World coral snake
• Old World crayfish
• Old World flycatcher
• Old World hop hornbeam
• Old World jay
• Old World least weasel
• Old World leishmaniasis
• Old World mistletoe
• Old World monkey
• Old World oriole
• Old World porcupine
• Old World quail
• Old World rabbit
• Old World robin
• Old World scops owl
• Old World vulture
• Old World warbler
• Old world white pelican