'unitemporal' originates from Latin, specifically the elements 'uni-' from 'unus' meaning 'one' and 'temporal' from 'temporalis', where 'tempus' meant 'time'.

'unitemporal' was formed in modern English by combining the Latin-derived prefix 'uni-' and the adjective 'temporal' (from Medieval/Old French via Latin 'temporalis'), resulting in the compound meaning 'relating to one time'.

Initially composed to convey the sense of 'one' + 'time', its usage has remained fairly consistent and now denotes 'occurring in or limited to a single time dimension'.