PTB meaning in Academic & Science ?

Answer:

INFO: Full form for PTB is Permian-Triassic Boundary in Academic & Science category
PTB also has other full forms in other categories mentioned below.

Full Form	Category
Physikalisch Technische Bundesanstalt	Academic & Science
Permian-Triassic Boundary	Academic & Science
Push To Break	Academic & Science
Physikalish Technische Bundesanstalt	Academic & Science
Petersburg (va)	Airport Code
Placer Theatre Ballet	Arts
Penn Tree Bank	Business
PTB Group Ltd	Business
Polypyrimidine-tract-binding	Chemistry
Photonics Tech Briefs	Community
Phineas Taylor Barnum	Community
Personal Travel Budget	Community
Punjab TextBook Board	Community
Peru Travel Bureau	Community
Parents and Teachers of Bartlett	Community
Project Team Builder	Computing
Public-Test Build	Computing
Programming Track Booster	Computing
Pubtech Batchworks	Computing
Peer Transaction Bus	Computing
Packet Too Big	Computing
Passive Treble and Bass	Electronics
Pubtech Batchworks Script File	File Type
Panthera Tigris Bengalis	General
Personal Transport Bot	General
Pre Term Birth	General
Pass the Buck	General
Patellar Tendon Bearing	General
Pacific Turbine Brisbane	General
Plastic Tool Box	General
Performance Tube Bending	General
Phospho Tyrosine Binding	General
Physical Test Battery	General
Position Task Book	General
Place To Belong	General
Peugeot Talbot Belgique	General
Ported Throttle Body	General
Pakistan Tobacco Board	General
Photochemical Tissue Bonding	General
Project Team Beta	General
Push The Button	General
Partido Trabalhista Brasileiro	General
Ptahhotep's Team Balancer	General
Poor Terrible Bunch	General
Push Type Black	General
Powers That Be	Governmental
Pave The Bay	Governmental
Parti du Travail de Belgique	Governmental
Passenger Transportation Board	Governmental
Pharmacology and Toxicology Branch	Governmental
Parti du Travail du Burkina	Governmental
Partnerships Technical Bureau	Governmental
PATTAMBI	Indian Railway Station
Pinoy Tech Blog	Internet
Please Text Back	Internet
Pack The Bag	Internet
Physical Therapy Board	Jobs
Pounds Per Thousand Barrels	Measurement Unit
Phlebotomy	Medical
Project Test Bed	Military and Defence
Punish The Best	Military and Defence
P-Town Ballers	News & Entertainment
Petersburg, Virginia USA	Regional
Payload Timing Buffer	Space Science
Portland Trail Blazers	Sports & Games
Publicly Traded Banks	Stock Exchange
Passaredo Linhas Aéreas	Transport & Travel
Petit Train de Banlieue	Transport & Travel