diff --git a/glossary/API.md b/glossary/API.md
new file mode 100644
index 000000000..d10273880
--- /dev/null
+++ b/glossary/API.md
@@ -0,0 +1,4 @@
+### API
+
+API stands for Application Programming Interface and is a set of features and rules provided by a piece of software to enable interaction with third-party software.
+The code features of a web API usually include methods, properties, events or URLs.