diff --git a/docs/jargon-org.txt b/docs/jargon-org.txt
index 8168a13..6e18929 100644
--- a/docs/jargon-org.txt
+++ b/docs/jargon-org.txt
@@ -19,7 +19,7 @@ Free Documentation License".
 
 * Generated
 
-This file last generated Tuesday, 16 October 2018 05:01PM UTC
+This file last generated Tuesday, 16 October 2018 05:07PM UTC
 
 * Glossary
 ** (
@@ -7881,6 +7881,9 @@ n. [UK] A wannabee or early larval stage hacker who spends most of his or her ti
 
 2. Some bored random user trying a couple of the simpler features with a developer looking over his or her shoulder, ready to pounce on mistakes. Judging by the quality of most software, the second definition is far more prevalent. See also demo.
 
+*** test driven development
+Abbreviated as TDD. The practice of writing unit tests before writing your program. Also see unit test.
+
 *** text
 1. [techspeak] Executable code, esp. a pure code portion shared between multiple instances of a program running in a multitasking OS. Compare English. 
 
diff --git a/docs/jargon.1.gz b/docs/jargon.1.gz
index 98b8c6a..9230c69 100644
Binary files a/docs/jargon.1.gz and b/docs/jargon.1.gz differ
diff --git a/docs/jargon.html b/docs/jargon.html
index 0a859fc..db5015b 100644
--- a/docs/jargon.html
+++ b/docs/jargon.html
@@ -18,7 +18,7 @@ Free Documentation License".
       </p>
       <H2>Generated</H2>
       <p>
-This file last generated Tuesday, 16 October 2018 05:01PM UTC
+This file last generated Tuesday, 16 October 2018 05:07PM UTC
 
       </p>
       <H2>Glossary</H2>
@@ -9244,6 +9244,10 @@ This file last generated Tuesday, 16 October 2018 05:01PM UTC
         <p>1. Real users bashing on a prototype long enough to get thoroughly acquainted with it, with careful monitoring and followup of the results. </p>
 
 <p>2. Some bored random user trying a couple of the simpler features with a developer looking over his or her shoulder, ready to pounce on mistakes. Judging by the quality of most software, the second definition is far more prevalent. See also demo.</p>
+        <H4>test driven development</H4>
+        <p>
+        Abbreviated as TDD. The practice of writing unit tests before writing your program. Also see unit test.
+        </p>
         <H4>text</H4>
         <p>1. [techspeak] Executable code, esp. a pure code portion shared between multiple instances of a program running in a multitasking OS. Compare English. </p>
 
diff --git a/entries/test_driven_development.txt b/entries/test_driven_development.txt
new file mode 100644
index 0000000..1e858f4
--- /dev/null
+++ b/entries/test_driven_development.txt
@@ -0,0 +1,4 @@
+test driven development
+
+Abbreviated as TDD. The practice of writing unit tests before writing your
+program. Also see unit test.
\ No newline at end of file