Acronyms & Abbreviations

The definition of ORD is:

IATA code for O'Hare International Airport, Chicago, Illinois, United States

Observatory Requirements Document

Observed Range Deviation

Office and Research and Development

Office of Rare Diseases

Office of Rare Diseases, National Institutes of Health

Office of Regulation Development

Office of Research & Development

Office of Research and Development

Office of Research and Development's

Office of Research Development

Once-Run Distillate

Operational Readiness Data

Operational Readiness Date

Operational Readiness Demonstration

Operational Readiness Document

Operational Ready Data

Operational Rediness Date

Operational Requirement Data

Operational Requirement Document

Operational Requirement Documents

Operational Requirements Description

Operational Requirements Document

Operational Requirements Documents

Operational Research Division

Operational Rqmts Doc

Operationally Ready Date

Operations readiness demonstration

Operations Requirements Document

Optical rotary dispersion

Optical rotatory dispersion

Optional Requirements Document

Oral radiation death

Orange Air Services

Orbital Requirements Document

Ordained

Order

Ordinal Number

Ordinance

Ordinands

Ordinary

Ordinary Share

Ordination

Ordnance

Organisation for Rural Development

Orientation disruptor

Orotidine

Outer ring deiodination

Override Restrictions Denied

Owner's Risk of Damage

Oxidation-Retarded Diffusion