The meaning of the Acronym WAA is...

WAA is

• Welded Aluminum Alloy
• Water-Augmented Air jet

More Meanings For WAA:

• Web Analytics Association
• Windows Administrator Authentication
• Washington Area Astronomers
• Westchester Amateur Astronomers
• Western Amateur Astronomers
• Wisconsin Arborist Association
• Waris, Papua New Guinea (Seismograph station code)
• Writing for Academic Applications
• Wisconsin Alumni Association
• Winthrop Alumni Association
• Werkgroep Artsen Advocaten
• World Assembly on Ageing
• When Artists Attack
• Washington Association of Accountants
• World of Art and Antiques

WAA is also in:

• Accounting
• Astronomy
• Botany
• Firms
• General
• Geology
• Software
• Unfiled
• Universities