\begin{definition}[Definition:Fort Space/Countable]
Let $S$ be an infinite set.
Let $p \in S$ be a particular point of $S$.
Let $T = \struct {S, \tau_p}$ be a Fort space.
Let $S$ be countably infinite.
Then $\tau_p$ is a '''countable Fort topology''', and $\struct {S, \tau_p}$ is a '''countable Fort space'''.
\end{definition}