[O] Is there a way to, in a table, denote an entire column as LaTeX

[Stephen J. Barr]

Greetings,

In a table, is it possible to denote that an entire column is LaTeX
markup, rather than using the $$ markup around each expression. 

Sample table:

|---------+------------------|
| Term    | Explanation      |
|---------+------------------|
| $$x^2$$ | This is a square |
| $$x^3$$ | This is a cubic  |
|---------+------------------|


Is there a better way to do this?

Thanks,
Stephen