Optical Transient Detector
out the door
Operational Technical Documentation
Orbiter Test Director
Office of Technology Development
O2Diesel Corporation
Observations of Time Differences
Observed Time Difference
Observed Time Differences
oculotrichodysplasia
Office of Test Directorate
Official Table of Distances
On Time Delivery
One Time Developed
Open Trial Dog
Operational Test Director
Optical Time Division
Optical Time Division Demultiplexer
Optical Time Domain
Optical Transient Dector
oral temperature device
Orbital Test Directive
organ tolerance dose
Original Transmission Density
orthodenticle
Orthogonal Transmit Diversity
ORU Transfer Device
Other Than Dwelling
Other Training Duty
Outlook-Transmitted Disease