If you don't want the text to wrap and you don't want the size of the column to get bigger then set a width and height on the column and set "overflow: hidden" in your stylesheet.
To do this on only one column you will want to add a class to that column on each row. Otherwise you can set it on all columns, that is up to you.
Html:
<table width="300px">
<tr>
<td>Column 1</td><td>Column 2</td>
</tr>
<tr>
<td class="column-1">this is the text in column one which wraps</td>
<td>this is the column two test</td>
</tr>
</table>
stylsheet:
.column-1
{
overflow: hidden;
width: 150px;
height: 1.2ex;
}
An ex unit is the relative font size for height, if you are using pixels to set the font size you may wish to use that instead.