Internal & external audits: first-, second-, and third-party audits. 1  A first-party audit is performed within an organization to measure its strengths and weaknesses against its own procedures or methods and/or against external standards adopted by (voluntary) or imposed on (mandatory) the organization.
Precursor (chemistry) In chemistry, a precursor is a compound that participates in a chemical reaction that produces another compound. In biochemistry, the term precursor often refers more specifically to a chemical compound preceding another in a metabolic pathway, such as a protein precursor. 1 Illicit drug precursors.
Chambers 20th Century Dictionary(0.00 / 0 votes)Rate this definition: Prelude. prÄ-lÅ«dâ², or prelâ²Å«d, n. the introductory movement of a musical work: a prefatory piece to an oratorio, &c.: an organ voluntary before a church service: a preface: a forerunner.âv.t.