expresso/ikʹspresoh/ noun (pl -os) (pl expressos)

• organise
• organism
• organist
• organization
• organize
• organo-
• organoleptic
• organon
• organophosphate
• organum
• organza
• organzine
• orgasm
• orgeat
• orgy
• -orial
• oribi
• oriel window
• orient
• Oriental
• oriental
• orientalism
• orientalist
• orientate
• orientation