The complete exclusion of magnetic flux characteristic of a superconductor cooled below $T_c$ is known as what property?

Answer

Perfect diamagnetism.

The physical manifestation of the Meissner effect, where the magnetic field inside the bulk of the superconductor is zero due to active expulsion of flux, is described as perfect diamagnetism.

The complete exclusion of magnetic flux characteristic of a superconductor cooled below $T_c$ is known as what property?
resistanceMaterialquantumzerosuperconductor