diff --git a/Data/Abbr/aviation.csv b/Data/Abbr/aviation.csv
index 7d87f4a0..30f4f129 100644
--- a/Data/Abbr/aviation.csv
+++ b/Data/Abbr/aviation.csv
@@ -1,4 +1,4 @@
-Abbr,Description
+Abbreviation,Description
 AB,Air Base
 AC,Aircraft
 ACAS,Airborne Collision Avoidance System
diff --git a/Data/Abbr/computer.csv b/Data/Abbr/computer.csv
index 73dbf3b6..f91bf35f 100644
--- a/Data/Abbr/computer.csv
+++ b/Data/Abbr/computer.csv
@@ -1,4 +1,4 @@
-Abbr,Description
+Abbreviation,Description
 CPU,Central Processing Unit
 GPU,Graphics Processing Unit
 RAM,Random Access Memory
diff --git a/Data/Abbr/medicine.csv b/Data/Abbr/medicine.csv
index 59e6a242..796d1c43 100644
--- a/Data/Abbr/medicine.csv
+++ b/Data/Abbr/medicine.csv
@@ -1,4 +1,4 @@
-Abbr,Description
+Abbreviation,Description
 PR,per the rectum
 pr,per the rectum
 PT,prothrombin time
diff --git a/Data/Abbr/misc.csv b/Data/Abbr/misc.csv
index 49862edc..19139b22 100644
--- a/Data/Abbr/misc.csv
+++ b/Data/Abbr/misc.csv
@@ -1,4 +1,4 @@
-Abbr,Description
+Abbreviation,Description
 0D,obvious deed
 1AM,Air Mechanic 1st Class
 1D,One-Dimensional
diff --git a/Data/Abbr/music.csv b/Data/Abbr/music.csv
index 6202a22e..0daa5cb6 100644
--- a/Data/Abbr/music.csv
+++ b/Data/Abbr/music.csv
@@ -1,4 +1,4 @@
-Abbr,Description
+Abbreviation,Description
 8va,Octave up
 ad lib,Ad Libitum (“freely”)
 afl,Alto flute
diff --git a/Scripts/what-is.ps1 b/Scripts/what-is.ps1
index c33dcf75..b3ee392d 100755
--- a/Scripts/what-is.ps1
+++ b/Scripts/what-is.ps1
@@ -17,9 +17,9 @@ try {
 	foreach ($File in $Files) {
 		$Table = import-csv "$File"
 		foreach($Row in $Table) {
-			if ($Row.Abbr -eq $Abbreviation) {
+			if ($Row.Abbreviation -eq $Abbreviation) {
 				$Filename = (get-item "$File").Name
-				"  → $($Row.Abbr) = $($Row.Description) (in $Filename)"
+				"  → $($Row.Abbreviation) = $($Row.Description) (in $Filename)"
 				$FoundOne = $true
 			}
 		}