magistral

/หˆmadส’ษชstษนษ™l/
noun
  1. 1

    A sovereign medicine or remedy.

  2. 2

    A magistral line.

  3. 3

    Powdered copper pyrites used in the amalgamation of ores of silver, as at the Spanish mines of Mexico and South America.

adjective
  1. 1

    Pertaining to or befitting a master; authoritative.

  2. 2

    (pharmaceutical effect) Sovereign (of a remedy); extremely effective.

  3. 3

    Formulated extemporaneously, or for a special case; opposed to officinal, and said of prescriptions and medicines.

Source: https://en.wiktionary.org/wiki/magistral