Source

File: wp-includes/taxonomy.php

function has_term_meta( $term_id ) {
	$check = wp_check_term_meta_support_prefilter( null );
	if ( null !== $check ) {
		return $check;
	}

	global $wpdb;

	return $wpdb->get_results( $wpdb->prepare( "SELECT meta_key, meta_value, meta_id, term_id FROM $wpdb->termmeta WHERE term_id = %d ORDER BY meta_key,meta_id", $term_id ), ARRAY_A );
}