பொருள் : (geology) the deposition of one geological stratum on another.
பொருள் : (geology) the principle that in a series of stratified sedimentary rocks the lowest stratum is the oldest.
ஒத்த சொற்கள் : principle of superposition, superposition principle
பொருள் : (geometry) the placement of one object ideally in the position of another one in order to show that the two coincide.
பொருள் : The placement of one thing on top of another.