'condense' originates from Latin, specifically the word 'condensare,' where 'con-' meant 'together' and 'densare' meant 'to make thick or dense.'

'condensare' transformed into the Old French word 'condenser,' and eventually became the modern English word 'condense' through Middle English.

Initially, it meant 'to make thick or dense,' but over time it evolved into its current meanings of 'to make something denser or more concentrated' and 'to change from a gas to a liquid.'