1. Pertaining to a master; magisterial; authoritative; dogmatic 
2. Formulated extemporaneously, or for a special case; - opposed to officinal, and said of prescriptions and medicines

Encyclopedia: Magistral

• Copernicia prunifera
• Copernicus
• copesetic
• copesettic
• copestone
• copier
• copilot
• coping
• coping saw
• coping stone
• copious
• copiously
• copiousness
• coplanar
• Copland
• Copley
• copolymer
• copolymerise
• copolymerize
• copper
• copper beech
• copper color
• copper colored
• copper colour
• copper coloured