"chance interaction" is a correct and usable phrase in written English.
It refers to an unplanned or accidental encounter between two or more people. It can be used in a variety of contexts, such as in a personal narrative, a scientific study, or a news article. Here is an example: "While browsing at the bookstore, Marie had a chance interaction with her favorite author. She was thrilled to have the opportunity to discuss her favorite book with the writer herself."
I'm intrigued by the possibilities that result from chance interaction, be they romantic or aesthetic.
A chance interaction with the publishing house's founder and staff sets the company on a surreal crash course with the future.
The stories too often feature clichéd piffle (a chance interaction, he says, can "change the way we think about everything") and end with treacly flourishes ("This is what we sound like when nothing is holding us back").
Your next job or career break could come from a chance interaction with a college or graduate school alumni, someone you grew up with who is now a big hotshot, the parents of your children's friends from soccer, people you meet at religious or community events, the gym or at the local Starbucks.
He thought his days of gloving had come to an end, but a chance interaction with Matthew was about to change everything.
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The American urban theorist Jane Jacobs argued that parts of cities become lively and safe through the possibility of chance interactions.
A solution to this problem is to locate sunlight-dependent facilities in polar regions where nights can be very short due to chance interactions of lunar topography and orbital mechanics.
You can see it in sports, where the coach is a genius or a bum based on what other people do on the field and the chance interactions between them.
This novel explores aspects of almost all our national modern ills — bullying, school shootings, the dangers of cyber-hookups, homelessness, the housing crises, income disparity, crazy-rich-person philanthropy — and has enough chance interactions to make Dickens blush.
Harrigan and Milstein are convinced that the ones they talk to place a premium on employee morale, which they believe will benefit from chance interactions and events with their startup neighbors like affinity-based lunches and book signings.
