# What is the meaning of “smeared limit cycle”?

I'm reading the paper Phase dynamics of coupled oscillators reconstructed from data by Kralemann et. al. (2008), which is about representing phenomena that exhibit a stable limit cycle (i.e. non-linear systems with a periodic orbit or “limit cycle”, where nearby trajectories decay into the limit cycle) as a generalised phase oscillator. They make reference to a smeared limit-cycle, and I’m not sure what they mean with smeared. Can anyone explain this?