WordPress at a glance
action is not described

edit_terms action-hook . WP 2.9.0

Fires immediately before the given terms are edited.

Usage

add_action( 'edit_terms', 'action_function_name_1565', 10, 2 );
function action_function_name_1565( $term_id, $taxonomy ){
	// action...
}
$term_id(int)
Term ID.
$taxonomy(string)
Taxonomy slug.

Where the hook is called

wp_update_term()
wp_insert_term()
wp-includes/taxonomy.php 2729
do_action( 'edit_terms', $term_id, $taxonomy );
wp-includes/taxonomy.php 2141
do_action( 'edit_terms', $term_id, $taxonomy );

Where the hook is used (in WP core)

Does not used.