precursor

/pɹɨˈkɜɹ.səɹ/

ot noun

That which precurses: a forerunner, predecessor, or indicator of approaching events.
One of the compounds that participates in the chemical reaction that produces another compound.

sifat adjective

(of intersymbol interference) Caused by the following symbol.

Manbalar: Wiktionary (Free Dictionary API orqali), Datamuse, Tatoeba (CC BY 2.0 FR), MyMemory.