Operation Allied Force
Optical Alignment Facility
Orbit Analysis Flight
osteoclast activating factor
Object Activation Framework
Objective Award Fee
off-axis factor
open air factor
open architecture framework
Open Archives Forum
Open-Arc Furnace
Origin Address Field
Originating Address Format
oroantral fistula
Orthopaedic Acronym Finder
osteoblast activating factor
osteoclast activating factors
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