diff --git a/include/malunal/type.h b/include/malunal/type.h
index 734ee70..2a24a35 100644
--- a/include/malunal/type.h
+++ b/include/malunal/type.h
@@ -288,4 +288,28 @@ _Static_assert(
   typedef const  name##_t* name##_iptr_t; \
   struct name
 
+/**
+ * @def     define_union
+ * @brief   Defines a union and its pointer types.
+ * @details This simplifies the way we typically define our unions, in which
+ *          we define the union itself and type definitions for the mutable
+ *          and immutable pointers to that union.
+ * @param   name The name of the union.
+ */
+#define define_union(name)               \
+  typedef union name      name##_t;      \
+  typedef       name##_t* name##_mptr_t; \
+  typedef const name##_t* name##_iptr_t; \
+  union name
+
+/**
+ * @def     define_enum
+ * @brief   Defines an enumeration.
+ * @details This simplifies the way we typically define our enumerations.
+ * @param   name The name of the structure.
+ */
+#define define_enum(name)     \
+  typedef enum name name##_t; \
+  enum name
+
 #endif /* MALUNAL_TYPES_HEADER */