'acclimate' originates from the French word 'acclimater', where 'a-' meant 'to' and 'climat' meant 'climate'.

'acclimater' transformed into the English word 'acclimate' during the 19th century.

Initially, it meant 'to adapt to a climate', but over time it evolved into its current meaning of 'to become accustomed to a new environment'.