How to add term description to view?
You can extract the tid used in the view in a preprocess hook, and use it to get the description and render it where you want.

Another solution would be to create an area handler that displays the description. This could then be used to render the term description in the header or footer section of the view.

To create an area handler you need to subclass views_handler_area and add your area handler to the term using hook_views_data_alter

hook_views_data_alter(&amp;$data) {
  $data['taxonomy_term_data']['your_area_handler'] = array(
    'title' =&gt; t('Title'),
    'help' =&gt; t('Help text.'),
    'area' =&gt; array(
      'handler' =&gt; 'your_views_area_handler_class',
    ),
  );
}


The area handler doesn't need much more than a render function which acts as it's theming function, so it's not that tricky.