A single program in a series is called an episode.

I never know when I'm having what the doctors call an episode.

A single instance of a web series program is called an episode or webisode.

The second season comprises a single volume of 11 episodes called Generations.

After climbing down to the surface, the third episode, called Inferno, begins.

The report called his death an "appalling episode of serious gratuitous violence".

After severe symptoms (called a psychotic episode), your loved one may come to you for help.

In 2003, the four comedians met again and made a new episode called "Fisso".

Symptoms of lupus may come and go in episodes called flares.

There were 10 episodes and 1 special episode called "Serious Survival"