1. Any notation that uses 16 different characters
   - hexadecimal notation

Type of: mathematical notation

• phaser
• phasianid
• Phasianidae
• Phasianus
• Phasianus colchicus
• phasic
• Phasmatidae
• Phasmatodea
• phasmid
• phasmid insect
• Phasmida
• Phasmidae
• Phasmidia
• phat
• phatic communication
• phatic speech
• PhD
• pheasant
• pheasant coucal
• pheasant cuckoo
• pheasant under glass
• pheasant's-eye
• Phegopteris
• Phegopteris connectilis
• Phegopteris hexagonoptera