inclinometer Syllabification: (in·cli·nom·e·ter)Pronunciation: /ˌinkləˈnämitər/Definition of inclinometer noun a device for measuring the angle of inclination of something, especially from the horizontal. Origin: mid 19th century: from Latin inclinare 'to incline' + -meterinclinometer in other Oxford dictionaries Definition of inclinometer in the British & World English dictionary