  Exceptional points (EPs) associated with a square-root singularity have been
found in many non-Hermitian systems. In most of the studies, the EPs found are
isotropic meaning that the same singular behavior is obtained independent of
the direction from which they are approached in the parameter space. In this
work, we demonstrate both theoretically and experimentally the existence of an
anisotropic EP in an acoustic system that shows different singular behaviors
when the anisotropic EP is approached from different directions in the
parameter space. Such an anisotropic EP arises from the coalescence of two
square-root EPs having the same chirality.
