Precursor
01
先駆者, 前兆
someone or something that comes before another of the same type, acting as a sign of what will come next
例
The invention of the telegraph was a precursor to modern communication technologies.
電信の発明は、現代の通信技術の先駆けでした。
02
前駆体, 前駆物質
a substance from which another substance is formed (especially by a metabolic reaction)
語彙ツリー
precursory
precursor
cursor
