polycycle

plural polycycles

1. mathematicsA planar countably locally-finite graph in which all interior vertices have the maximum vertex degree and all interior faces are polygons with the same number of faces.

   Recall that the cyclicity of a polycycle in a family of equations is the maximal number of limit cycles that may occur from the polycycle in this family.

   2004, Normal Forms, Bifurcations and Finiteness Problems in Differential Equations

2. radarA waveform with multiple cycles of the carrier within the pulse envelope.