'anemometrically' originates from English, specifically from the word 'anemometric' with the adverbial suffix '-ally', where 'anemometric' is derived from 'anemometer' (a device for measuring wind speed).

'anemometric' comes from 'anemometer' (from Greek 'anemos' meaning 'wind' and 'metron' meaning 'measure'), and the adverbial form 'anemometrically' was formed in modern English.

Initially, it meant 'in a manner relating to anemometers', and this meaning has remained the same in modern usage.