What is the meaning of Magistral?

Of, relating to, or befitting a master; authoritative.

Sovereign (of a remedy); extremely effective.

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.

masterful, magistral (characteristic of a master or mastery)

magistral line

main, arterial

magistral, master

ex cathedra

remarkable, masterful

resounding, sound

reintegrationist spelling of maxistral

magistral (relating to a master)

master, magistrate

masterly

magistral, magisterial, masterly

Source: wiktionary.org