AO meaning in Regional ?

Answer:

What is Australian Open mean?

The Australian Open is a tennis tournament held annually over the last fortnight of January at Melbourne Park in Melbourne, Australia. The tournament is the first of the four Grand Slam tennis events held each year, preceding the French Open, Wimbledon, and the US Open. It features men's and women's singles; men's, women's, and mixed doubles; junior's championships; and wheelchair, legends, and exhibition events. Before 1988, it was played on grass courts, but since then three types of hardcourt surfaces have been used: green-coloured Rebound Ace up to 2007, blue Plexicushion from 2008 to 2019, and blue GreenSet since 2020.

First held in 1905 as the Australasian championships, the Australian Open has grown to become one of the biggest sporting events in the Southern Hemisphere. Nicknamed "the happy slam", the tournament is the highest attended Grand Slam event, with more than 812,000 people attending the 2020 tournament. It was also the first Grand Slam tournament to feature indoor play during wet weather or extreme heat with its three primary courts, Rod Laver Arena, John Cain Arena and the refurbished Margaret Court Arena equipped with retractable roofs.

reference

Full Form	Category
Atlantic Ocean	Academic & Science
Alpha Omega	Academic & Science
Aspheric Optics	Academic & Science
Astronomical Observatory	Academic & Science
Agent Orange (Toxic)	Academic & Science
Arctic Oscillation	Academic & Science
Academic Office	Academic & Science
Account Of	Accounts and Finance
Amount of ....	Accounts and Finance
Angelic Oceans	Business
Assessment Objective	Business
Aubrey Organics	Business
American Optical Company	Business
Accrediting Organization	Business
Antique and Old	Business
Arentzen Ohlander Glass Studio	Business
Aqueous Oxygen	Chemistry
Aldehyde Oxidase	Chemistry
Atomic Orbital	Chemistry
Accompaniment Only	Community
Antiquites Orientales	Community
All Outdoors	Community
Adults Only	Community
Alon Oleartchik, musician	Community
Altogether Outdoors	Community
Analog Output	Computer Hardware
Auto Off	Computer Hardware
Autonomous Object	Computing
Acousto Optic	Electronics
Analog Out	Electronics
Always Open	Electronics
Alpha Oscillator	Electronics
Always Oscillating	Electronics
Auxiliary Oiler	General
Auto Ordnance	General
All Output	General
Athol Orange	General
Anal Orfice	General
Aoiro Ohki	General
Aktsionernoye Obshestvo	General
Authorize Only	General
Angry Outburst	General
Astromanialetta Orphormotogus	General
Alpha Out	General
Anthony Oropeza	General
Alternative Ordinary	General
Administratieve Organisatie	General
Assessment Objectives	General
Associated Operations	General
Auxillary Oiler	General
Application Object	General
Fleet Oiler (Auxiliary, Oiler)	General
Aviation Ordnance	General
Apoctalyptic Order	General
Automags Online	General
Associate Post Office	General
Autres Objets (other articles)	General
Argentum Online	General
Annoying Orange	General
Airport Operations	General
Angola AO	General
Accepted Offer	General
All Other	General
Assured Outcomes	General
Ambient Occlusion	General
Audi Only	General
Acronym Or	General
Aesthetic Olympian	General
and AO	General
Announcement of Opportunity	General
Audi Option	General
Aviatsionnaya Oskolochnaya	General
Action Office	General
Assessing Officer	General
Annotated Outline	General
Average of OC	General
Attribute On	General
Ass Ole	General
Alternative Option	General
AntiOxidant	General
Ancient One	General
Automatic Metal Products	Governmental
All Off	Governmental
Auxiliary Office	Governmental
Aesthetic Objective	Governmental
Assembling Objects	Governmental
Aviation Officer	Governmental
Air Observer	Governmental
American Overseas	Governmental
AONLA	Indian Railway Station
Anonim Ortaklik	International
Aosta (Province)	International
Liga Comunista - Acuerdo Obrero	International
Anime Online	Internet
Among Others	Internet
Another One	Internet
Auxiliary Operator	Jobs
Accountable Officer	Jobs
Adjustable Objective	Medical
Abdominal Obesity	Medical
Accreditation Organisation	Medical
Acid Output	Medical
Acridine Orange	Medical
Alveolar Osteitis	Medical
Anaplastic Oligodendroglioma	Medical
Ankle Orthosis	Medical
Anterior Oblique	Medical
Aortic Occlusion	Medical
Aortic Opening	Medical
Arterial Occlusion	Medical
Atlanto-Occipital	Medical
Atypical Odontalgia	Medical
Adult Onset	Medical
Adverse Outcome	Medical
Age of Onset	Medical
Airways Obstruction	Medical
Antisense Oligonucleotide	Medical
Atlanto-Odontoid	Medical
Angle Of ....	Medical
Aorta	Medical
Access Orlando	Medical
All The Other	Messaging
Anarchy Online	Messaging
Administrative Occupations	Military and Defence
Authorizing Official	Military and Defence
Area of Operations	Military and Defence
Action Officer	Military and Defence
Aerial Observer	Military and Defence
Approval Order	Military and Defence
Air Officer	Military and Defence
Army Orders	Military and Defence
Administration Officer	Military and Defence
Aviation Ordnanceman	Military and Defence
Administrative Officer	Military and Defence
Aviatsionnaya Oskolochnyang (aircraft Fragmentation Ammunition)	Military and Defence
Area of Operation	Military and Defence
Agent Orange	Military and Defence
Advanced Optics	Physics Related
Adaptive Optics	Physics Related
Authorized Occupant	Real Estate
Administrative Ownership	Real Estate
Officer of the Order of Australia	Regional
Appalachian and Ohio Railroad	Regional
Australian Open	Regional
Arc Objects	Softwares
Assembly Order	Space Science
Atomic Oxygen	Space Science
Amateur Owner	Sports
Australian Airlines	Transport & Travel