The Spanish word 'ascensor' (meaning 'elevator') comes from the Latin word 'ascensor' meaning 'one who ascends'. This Latin word was formed by combining 'ascendere' ('to ascend') with the agent suffix '-sor' (indicating a person or thing that performs an action). The word 'ascendere' itself was created by joining the Latin prefix 'ad-' (meaning 'toward, up') with the verb 'scandere' (meaning 'to climb, ascend').

The meaning evolved quite naturally - from describing someone who ascends, the word came to refer to a machine that helps people ascend, namely an elevator.

Some related Spanish words that might be familiar to Spanish learners include 'ascender' (to ascend/rise), 'ascenso' (promotion/rise), and 'ascendente' (ascending/upward). All these words share the same Latin root 'ascendere' and relate to the concept of moving upward.

English speakers can connect 'ascensor' to several familiar English words that share the same Latin ancestry, such as 'ascend', 'ascension', and 'ascendant'. The word 'scan' also comes from the Latin 'scandere', though its meaning has shifted from climbing to examining something carefully (originally referring to counting metrical feet in poetry, as if climbing through the verse).