diff --git a/src/dimension.h b/src/dimension.h
index 0b2093d718a61c6ce850db1970412af3e2e462b9..7084d70f5794853557539862091809071af2e790 100644
--- a/src/dimension.h
+++ b/src/dimension.h
@@ -89,6 +89,34 @@ __attribute__((always_inline)) INLINE static float pow_dimension(float x) {
 #endif
 }
 
+/**
+ * @brief Returns the argument to the power given by the inverse of the
+ * dimension
+ *
+ * Computes \f$x^{1/d}\f$.
+ */
+__attribute__((always_inline)) INLINE static float pow_inv_dimension(float x) {
+
+#if defined(HYDRO_DIMENSION_3D)
+
+  return cbrtf(x);
+
+#elif defined(HYDRO_DIMENSION_2D)
+
+  return sqrtf(x);
+
+#elif defined(HYDRO_DIMENSION_1D)
+
+  return x;
+
+#else
+
+  error("The dimension is not defined !");
+  return 0.f;
+
+#endif
+}
+
 /**
  * @brief Returns the argument to the power given by the dimension plus one
  *