释义 |
precursor precursor /ˌpriːˈkɜː.sər/ aep /-ˈkɝː.sɚ/ noun [C] FORMAL ► F0 something that happened or existed before another thing, especially if it either developed into it or had an influence on it: » Sulphur dioxide is the main precursor of acid rain.» Biological research has often been a precursor to medical breakthroughs.Thesaurus+: ↑Preceding and introducing |