Metadata fields for all terms in a taxonomy?

I think I figured this out.

The function add_term_meta($term_id, $meta_key, $meta_value, $unique) works on only one term at a time, but instead is called every time the add term or edit term admin screens are called.

A similar process is described here:

https://www.wphub.com/adding-metadata-taxonomy-terms/

I think I figured this out.

The function add_term_meta($term_id, $meta_key, $meta_value, $unique) is called on a per-term basis, but is invoked every time the add term or edit term admin screens are called.

A similar process is described here: https://www.wphub.com/adding-metadata-taxonomy-terms/