Function: Checks if a term is an ancestor of another term.

Function: Sanitizes all term fields.

Function: Removes metadata matching criteria from a term.

Function: Retrieves metadata for a term.

Function: Updates term metadata.

Function: Updates metadata cache for list of term IDs.

Function: Gets all meta data, including meta IDs, for the given term ID.

Function: Registers a meta key for terms.

Function: Unregisters a meta key for terms.

Function: Determines whether a taxonomy term exists.