What does NLO stand for?

What does NLO mean?

NLO	Norman Lockyer Observatory Miscellaneous » Unclassified
NLO	Non-Linear Optic Academic & Science » Electronics
NLO	New London Orchestra Miscellaneous » Unclassified
NLO	NEW Leadership Oklahoma Governmental » State & Local
NLO	Northern Lights Orchestra Community » Music
NLO	Natural Language Query Computing » General
NLO	The Nick Levinovsky Orchestra Miscellaneous » Unclassified
NLO	Next-to-Leading-Order Academic & Science » Physics
NLO	Nonlinear Optics: Materials, Phenomena and Devices Academic & Science » IEEE
NLO	Naval Liaison Officer Governmental » Military