1. Having calypters 
2. Having a calyptra

See also: calypter, calyptra

• fractal
• fractal dimension
• fractal geometry
• fraction
• fractional
• fractional currency
• fractional distillation
• fractional monetary unit
• fractional process
• fractionally
• fractionate
• fractionation
• fractious
• fractiously
• fractiousness
• fracture
• fradicin
• fraenum
• frag
• Fragaria
• Fragaria ananassa
• Fragaria chiloensis
• Fragaria vesca
• Fragaria virginiana
• fragile