bpo-33957: Doc: Use better wording (GH-7912)
diff --git a/Doc/faq/design.rst b/Doc/faq/design.rst
index edc9c12..c2bf37a 100644
--- a/Doc/faq/design.rst
+++ b/Doc/faq/design.rst
@@ -500,7 +500,7 @@
to 1142331976. The hash code is then used to calculate a location in an
internal array where the value will be stored. Assuming that you're storing
keys that all have different hash values, this means that dictionaries take
-constant time -- O(1), in computer science notation -- to retrieve a key.
+constant time -- O(1), in Big-O notation -- to retrieve a key.
Why must dictionary keys be immutable?