
Operational Test Command

Officer in Tactical Command


Over the Counter


Operating Telephone Company


Over-the-Counter


Ozone Transport Commission


Operating Telefone Company


Orbiter Test Conductor


Operational Test Center


Overhead Trip Computer


Officer Training Corps


Official Test Centre


Online Training Center


Ouachita Technical College


oxytetracycline

Occupational Training Center

Ocean Thermal Conversion

ochratoxin C

odor threshold concentration

off the case

Office for Topography and Cartography

Office of Technology Commercialization

Office of Treaty Compliance

OFFICE TECHNOLOGY CENTER

Officers' Training Corp

Officers Training Corps

Offshore Technology Conference

offsite training center

Off-Track Capability

Okehampton Town Council

Old Table Control

On Tape Catalog

On Top Carriers

Once-Through Cooling

One Time Charge

One-Time Charge

Onsite Transfer Cask

Ontario Technology Corridor

open tubular column

open-top chambers