diff --git a/core/modules/taxonomy/lib/Drupal/taxonomy/Entity/Vocabulary.php b/core/modules/taxonomy/lib/Drupal/taxonomy/Entity/Vocabulary.php
index fe6669b..f0b9776 100644
--- a/core/modules/taxonomy/lib/Drupal/taxonomy/Entity/Vocabulary.php
+++ b/core/modules/taxonomy/lib/Drupal/taxonomy/Entity/Vocabulary.php
@@ -106,6 +106,7 @@ public function postSave(EntityStorageControllerInterface $storage_controller, $
 
     if (!$update) {
       entity_invoke_bundle_hook('create', 'taxonomy_term', $this->id());
+      taxonomy_add_description_field($this, 'Description');
     }
     elseif ($this->getOriginalID() != $this->id()) {
       // Reflect machine name changes in the definitions of existing 'taxonomy'
diff --git a/core/modules/taxonomy/taxonomy.module b/core/modules/taxonomy/taxonomy.module
index e05ec0d..68bed3b 100644
--- a/core/modules/taxonomy/taxonomy.module
+++ b/core/modules/taxonomy/taxonomy.module
@@ -1187,3 +1187,54 @@ function taxonomy_library_info() {
 
   return $libraries;
 }
+
+/**
+ * Adds the default description field to a taxonomy term type.
+ *
+ * @param \Drupal\taxonomy\VocabularyInterface $type
+ *   A vocabulary type object.
+ * @param $label
+ *   (Optional) The label for the description instance.
+ * @return
+ *   A description field instance.
+ */
+function taxonomy_add_description_field(VocabularyInterface $type, $label = 'Description') {
+  // Add the description field as needed.
+  $field = field_info_field('taxonomy_term', 'description');
+  $instance = field_info_instance('taxonomy_term', 'description', $type->id());
+
+  if (empty($field)) {
+    $field = entity_create('field_entity', array(
+      'name' => 'description',
+      'entity_type' => 'taxonomy_term',
+      'type' => 'text_long',
+    ));
+    $field->save();
+  }
+  if (empty($instance)) {
+    $instance = entity_create('field_instance', array(
+      'field_name' => 'description',
+      'entity_type' => 'taxonomy_term',
+      'bundle' => $type->id(),
+      'label' => $label,
+      'settings' => array('text_processing' => 1),
+    ));
+    $instance->save();
+
+    entity_get_form_display('taxonomy_term', $type->id(), 'default')
+      ->setComponent('description', array(
+        'type' => 'text_long',
+      ))
+      ->save();
+
+    // Assign display settings for the 'default' and 'teaser' view modes.
+    entity_get_display('taxonomy_term', $type->id(), 'default')
+      ->setComponent('description', array(
+        'label' => 'hidden',
+        'type' => 'text_default',
+      ))
+      ->save();
+  }
+
+  return $instance;
+}
\ No newline at end of file