Act on a taxonomy term that is being assembled before rendering.
The module may add elements to $term->content prior to rendering. This hook will be called after hook_view(). The structure of $term->content is a renderable array as expected by drupal_render().
$term: The term that is being assembled for rendering.
$view_mode: The $view_mode parameter from taxonomy_term_view().
$langcode: The language code used for rendering.
Note: this list is generated by pattern matching, so it may include some functions that are not actually implementations of this hook.
function hook_taxonomy_term_view($term, $view_mode, $langcode) {
$term->content['my_additional_field'] = array(
'#markup' => $additional_field,
'#weight' => 10,
'#theme' => 'mymodule_my_additional_field',
);
}