Precursor/priˈkɜːrsər/ Definition 1 of 3Pro Tip 1/3Historical Events Use 'precursor' to link historical events, showing progression or influence over time. The Sputnik launch was a precursor to the space race. Pro Tip 2/3Cause and Effect Use it to talk about an event or situation that triggers another. Frequent tardiness can be a precursor to job termination. Pro Tip 3/3Literary Foreshadowing In literature, 'precursor' can indicate an early sign or symbol hinting at future events. Dark clouds are a common precursor to a storm in novels.