dataveillance Syllabification: (da·ta·veil·lance)Pronunciation: /ˌdatəˈvāləns, ˌdātə-/Definition of dataveillance noun the practice of monitoring the online activity of a person or group, from algorithmic study of the residue of their various electronic and digital transactions and activities. Origin: 1980s: blend of data and surveillancedataveillance in other Oxford dictionaries Definition of dataveillance in the British & World English dictionary