diff --git a/Data/Abbr/aviation.csv b/Data/Abbr/aviation.csv
index a2c3ed09..166d44e5 100644
--- a/Data/Abbr/aviation.csv
+++ b/Data/Abbr/aviation.csv
@@ -165,7 +165,7 @@ CANSO,Civil Air Navigation Services Organization
 CARMA,CATC Radar Simulator Allahabad
 CAS,Calibrated Airspeed
 CASE,Controlled Airspace Synthetic Environment (Simulator of Alenia Marconi)
-CAT,Category of Aircraft
+CAT,"Category of Aircraft, Clear Air Turbulence"
 CATC,Civil Air Traffic Control
 CAVOK,Clouds And Visibility OK
 CBT,Computer-based Training
diff --git a/Data/Abbr/general.csv b/Data/Abbr/general.csv
index 99b408e1..65df936e 100644
--- a/Data/Abbr/general.csv
+++ b/Data/Abbr/general.csv
@@ -643,7 +643,7 @@ CASE,"Cellular ammunition storage equipment,Computer-Aided Software Engineering"
 CASS,Command Activated Sonobuoy System
 CASTFOREM,Combined Arms and Support Task FORce Evaluation Model
 CASTOR,Canadian Automatic Small Telescopes for Orbital Research
-CAT,"Community Acceptance Testing,Computer-Assisted (or Axial) Tomography"
+CAT,Community Acceptance Testing
 CATK,Counterattack
 CATS,Computer Active Technology Suspension
 CATT,Combined Arms Tactical Trainer
diff --git a/Data/Abbr/medicine.csv b/Data/Abbr/medicine.csv
index 73dfc5dd..339614da 100644
--- a/Data/Abbr/medicine.csv
+++ b/Data/Abbr/medicine.csv
@@ -1,4 +1,5 @@
 ABBR,TERM
+CAT,Computer-Assisted (or Axial) Tomography
 CDC,"(U.S.) Centers for Disease Control and Prevention; previously known as the Communicable Disease Center"
 IAS,"Insulin autoimmune syndrome (a rare cause of reversible autoimmune hypoglycemia)"
 PR,per the rectum