'normal-sized' originates from the English word 'normal' combined with 'sized', where 'normal' meant 'conforming to a standard' and 'sized' referred to 'having a particular size'.

'normal' changed from the Latin word 'normalis' meaning 'made according to a carpenter's square', and eventually became the modern English word 'normal'.

Initially, 'normal' meant 'made according to a carpenter's square', but over time it evolved into its current meaning of 'conforming to a standard'.