1. Having one estrous cycle per year
   - monoestrous

See also: estrous

• five-star
• five-star admiral
• five-year-old
• fivefold
• fivepence
• fiver
• fives
• fivesome
• fix
• fix up
• fix-it shop
• fixate
• fixation
• fixative
• fixed
• fixed assets
• fixed charge
• fixed cost
• fixed costs
• fixed disk
• fixed intonation
• fixed investment trust
• fixed oil
• fixed phagocyte
• fixed star