Viral Coefficient
Noun · Startup & VC
Definitions
A metric estimating how many additional users each existing user brings in on average through invitations or sharing. When the viral coefficient is above one, growth can become self-propelling in theory.
In plain English: A measure of how many new users each current user brings in.
Example: "The product had excitement, but the viral coefficient never got high enough to sustain compounding growth on its own."