'landmass' originates from the combination of 'land' and 'mass', where 'land' refers to the solid surface of the Earth and 'mass' refers to a large body or quantity.

'landmass' was formed by combining the words 'land' and 'mass' in English, and it has retained its meaning since its inception.

Initially, it meant 'a large area of land', and this meaning has remained consistent in modern usage.