'fertility-enhancing' originates from the combination of 'fertility' and 'enhancing', where 'fertility' refers to the ability to reproduce and 'enhancing' means to improve or increase.

'fertility' comes from the Latin word 'fertilitas', and 'enhancing' is derived from the Old French 'enhauncer', which means to raise or elevate.

Initially, 'enhancing' meant to raise or elevate, and over time it evolved to mean improving or increasing, especially in the context of fertility.