Acceptable plural forms of auditorium are auditoriums or auditoria.

Auditoria, aura, aurora and automata begin with the letters au and end with a.

addenda

auditoria

bodega

cadenza

cedilla

coda

fedora

hydra

hydrangea

hydrophobia

media

medulla

podia

soda

undersea

vodka

Antonio de Loureiro Gil has written:

'Auditoria de computadores' -- subject(s): Auditing, Electronic data processing departments

Alvin A Arens has written:

'Auditoria' -- subject(s): Business, Nonfiction, Text Book, OverDrive

'Auditing and assurance services' -- subject(s): Auditing