diff --git a/geom/aabb.hpp b/geom/aabb.hpp
index c4d56749..d6ceed53 100644
--- a/geom/aabb.hpp
+++ b/geom/aabb.hpp
@@ -109,6 +109,14 @@ namespace util::geom {
             return *this = *this | p;
         }
 
+        aabb operator| [[nodiscard]] (aabb<S,T> rhs) const noexcept
+        {
+            return {
+                min (lo, rhs.lo),
+                max (hi, rhs.hi)
+            };
+        }
+
 
         ::util::point<S,T> lo;
         ::util::point<S,T> hi;