'concentration' originates from Latin, specifically the word 'concentrare,' where 'con-' meant 'together' and 'centrare' meant 'to center.'

'concentrare' transformed into the French word 'concentration,' and eventually became the modern English word 'concentration' through Middle English.

Initially, it meant 'to bring to a common center,' but over time it evolved into its current meanings of 'focus' and 'density.'