What does ORAN stand for?

Orange - Laboratory science (DAVI)

Orangequit - Common English name - American Ornithologists Union four-character bird identification - Scientific name: Euneornis Campestris (IBP)

Orange Terminal - Federal Railroad Administration identification code

Orbital Analysis

Organisation Regionale Africaine de Normalisation - African Regional Organization for Standardization - AROS (EAIO)