n.
1.(geology) the deposition of one geological stratum on another
2.(geology) the principle that in a series of stratified sedimentary rocks the lowest stratum is the oldest
3.(geometry) the placement of one object ideally in the position of another one in order to show that the two coincide
4.the placement of one thing on top of another
Idiom of the Day
riding for a fall
to be risking failure or an accident due to overconfidence
My friend is riding for a fall if he continues his present attitude at his job.
