Fields with a lot of data will be converted to a "..." to preserve space in the grid view. If you hover over the "..." you will see a small box pop-up that shows the data in that field.



If you want to see the full text in the grid view, you will have to edit the field template (See Field Templates) for that record. The easiest way to do this is to turn design mode on. Go to Design > Design Mode On.



A gear icon will appear near the top right every field that has a field template. Click the gear to edit the template.



You can see that the "..." is coming from this template.



Change the ... to [DATA]. Then click save.



Your full field (description) will now appear.