vox angelicaPronunciation: /ˌvɒks anˈdʒɛlɪkə/Definition of vox angelica noun a soft stop on an organ or harmonium which is tuned slightly sharp to produce a tremolo effect. Origin: mid 19th century: from late Latin, literally 'angelic voice'vox angelica in other Oxford dictionaries Definition of vox angelica in the US English dictionary