What does OL stand for?

London Public Library, Ontario - Library symbol - National Library of Canada (NLC)

Object Language (SAUS)

Object Lifecycles - Computer science (HODG)

Observer, Left (SAUS)

Occupational Level

Ocean Letter

October League (AD)

Oculus Laevus - Left Eye - Ophthalmology

Odd Lot - Stock exchange term

Offering Line (SAUS)

Office Lady - Japan

Office of Labor (SAUS)

Officer of the Order of Leopold

Official Liquidator - British (ROG)

Ohio Laws - A publication (DLA)

Oil Level (AAG)

Oil Lighter - Shipping - British

Oiseau-Lyre - Record label - France

Oldenburg - German license plate city code

Oldham - Postcode (ODBW)

Old Lady

Old Latin - Language, etc.

Old Leysian (WDAA)

Oleum - Oil - Pharmacy

Oligoblastic Leukemia - Oncology

Olivary - Neurology

Oliver - Tire retread brand

Olsen Line (AD)

Olympic

Olympic Lift - Sports

Online

Only Loadable - Computer science (IAA)

Open Learning (AIE)

Open Light (SAUS)

Open Loop

Operating Level (IEEE)

Operating License

Operating Limit (COE)

Operating Location - Army

Operating Log

Operating Loss

Operational Left - NASA (NAKS)

Operational Left DSC or MDM (SAUS)

Operational Semantics (SAUS)

Operation Liftoff (EA)

Operation Limits (SAUS)

Optical Limiter (SAUS)

Orbital Launch

Ordered List (SAUS)

Order of Lafayette (EA)

Ordinary Leave - Military (AFM)

Ordinary Letter (WDAA)

Ordnance Lieutenant - Navy - British

Organization List (MCD)

Organizing Language (SAUS)

Original Learning - Psychometrics

Or Less

Oscillating Limiter (IAA)

Ostfriesische Lufttransport GmbH - Germany - ICAO designator (ICDA)

Other Line - Telecommunications (TEL)

Outgoing Letter

Output Latch

Output List (SAUS)

Output Logic (SAUS)

Outside Left - Soccer position

Overflow Level

Overhead Line

Overlap

Overlay (NASA)

Overload

Oculus Laevus - Left Eye - Latin (AD)

Oil - Pharmacy (CPH)

Oil Level (AD)

Oleum - Oil - Latin (AD)

Olive - Philately

Olivine - CIPW classification - Geology

Operating License (AD)

Or Less (AD)

Oldradus da Ponte de Laude - Deceased, 1335 - Authority cited in pre-1607 legal work (DSA)

Olive - Political party (AD)

Olympian - of Pindar - Classical studies (OCD)