2. Initialism. Provider Backbone Bridges ¹
¹ Source: wiktionary.com
Lexicographical Neighbors of Pbb
PASG PASOK PAS gene PAT PATA PAYE PAYG PAYGO PA projection PA system | PAs PB PB&J PBA PBB PBDE PBEM PBG PBGC PBGM | PBGV PBI PBI test PBM PBP PBPD PBPs PBR PBS |