OL
Proposed by a contributor, not yet supported by evidence.
Also seen as: OLs
Meaning · English
open line (open circuit, no continuity).
Noun
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).
Common questions
What does “OL” mean?
open line (open circuit, no continuity).
Is “OL” formal or informal?
No register label has been reviewed yet — treat it as neutral and check the usage notes above.