1. magistral - Noun
2. magistral - Adjective
Pertaining to a master; magisterial; authoritative; dogmatic.
Commanded or prescribed by a magister, esp. by a doctor; hence, effectual; sovereign; as, a magistral sirup.
Formulated extemporaneously, or for a special case; -- opposed to officinal, and said of prescriptions and medicines.
A sovereign medicine or remedy.
A magistral line.
Powdered copper pyrites used in the amalgamation of ores of silver, as at the Spanish mines of Mexico and South America.
Source: Webster's dictionary