The td tag is used to denote one cell in a table. It occurs inside a tr or th tag, and can contain any text and formatting tags.
Example:
<table> <tr><td>Cell (1,1)</td><td>Cell (2,1)</td></tr> <tr><td>Cell (1,2)</td><td>Cell (2,2)</td></tr> </table>
Will be formatted approximately as
| Cell (1,1) | Cell (2,1) |
| Cell (1,2) | Cell (2,2) |