\begin{definition}[Definition:Omega-Accumulation Point]
Let $T = \struct {S, \tau}$ be a topological space.
Let $A \subseteq S$.
An '''$\omega$-accumulation point''' of $A$ is a limit point $x$ of $A$ such that every open set containing $x$ also contains an infinite number of points of $A$.
\end{definition}