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Vinony

precursor

noun

  1. compound that participates in a chemical reaction that produces another compound
L229944 on Wikidata ↗

Wiktionary

Pronunciation: /pɹɪˈkɜː.sə/ / /ˈpɹiːˌkɜː.sə/ / /pɹɪˈkɜɹ.səɹ/

adj

Etymology: Etymology tree Proto-Indo-European *per- Proto-Indo-European *preh₂- Proto-Indo-European *-i Proto-Indo-European *préh₂i? Proto-Italic *prai Proto-Italic *prai- Latin prae-lbor. Middle English pre- English pre- English cursor English precursor From pre- + cursor.

  1. Caused by the following symbol.

noun

Etymology: Inherited from Middle English precursour, from Middle French precurseur or its etymon Latin praecursor (“forerunner”). By surface analysis, precurse + -or.

  1. That which precurses: a forerunner, predecessor, or indicator of approaching events.

    “Oxygen levels on Earth skyrocketed 2.4 billion years ago, when cyanobacteria evolved photosynthesis:[…]. The evolutionary precursor of photosynthesis is still under debate, and a new study sheds light. The critical component of the photosynthetic system is the “water-oxidizing complex”, made up of manganese atoms and a calcium atom.”

  2. One of the compounds that participates in the chemical reaction that produces another compound.