• (pharmacology) Formulated extemporaneously, or for a special case; opposed to officinal, and said of prescriptions and medicines. [from 16th c.]
  • (obsolete, pharmacology) Sovereign (of a remedy); extremely effective. [16th-17th c.]
  • Pertaining to or befitting a master; authoritative. [from 16th c.]


  • Powdered copper pyrites used in the amalgamation of ores of silver, as at the Spanish mines of Mexico and South America.
  • A magistral line.
  • A sovereign medicine or remedy.

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