'seldom-revised' originates from the combination of 'seldom' and 'revised', where 'seldom' means 'not often' and 'revised' means 'altered or updated'.

The term 'seldom-revised' combines the Old English 'seldan' meaning 'rarely' and the Middle English 'revisen' meaning 'to look at again'.

Initially, it meant 'rarely looked at again', but over time it evolved into its current meaning of 'rarely updated or changed'.