With Cuztom it is possible to add Meta fields to terms. NOTE: Versions < 3.0 don't use Wordpress core functions to register and add Term Meta.

$termmeta = register_cuztom_term_meta( $id, $taxonomy, $data, $locations )

(string) The ID of the box. Used for technical stuff.

(string|array) The box is attach to this Taxonomy (taxonomies).

(array) The data of the box

(string|array) The location the Meta Box is shown. Can be (and defaults to): 'add_form', 'edit_form'