We define formulas of entropy
dimension for a nonautonomous dynamical system consisting of a sequence of
continuous self-maps of a compact metric space. This study reveals analogues of basic
propositions for entropy dimension, such as the power rule, product rule
and commutativity, etc. These properties allow us to convert to an equality
an inequality found by de Carvalho (1997) concerning the product rule
for the autonomous dynamical system. We also prove a subadditivity rule
of entropy dimension for one-dimensional dynamics based on our previous
work.