'angulometer' originates from Latin, specifically the word 'angulus,' where 'angul-' meant 'angle,' combined with the Greek element 'metron' meaning 'measure' via the suffix '-meter.'

'angulometer' was formed in modern scientific English (influenced by New Latin combining forms) from 'angulo-' + '-meter' and became the modern English term 'angulometer.'

Initially, it meant 'an instrument for measuring angles,' and this meaning remains the same in modern usage.