noun a magistral line.
2. magistral ·noun a sovereign medicine or remedy.
3. magistral ·adj pertaining to a master; magisterial; authoritative; dogmatic.
4. magistral ·adj commanded or prescribed by a magister, ·esp. by a doctor; hence, effectual; sovereign; as, a magistral sirup.
5. magistral ·adj formulated extemporaneously, or for a special case;
opposed to officinal, and said of prescriptions and medicines.
6. magistral ·noun powdered copper pyrites used in the amalgamation of ores of silver, as at the spanish mines of mexico and south america.