Verb

1. superimpose, superpose, lay over, put, set, place, pose, position, lay

usage: place on top of; "can you superimpose the two images?"

Adjective

1. overlying, superimposed, superjacent (vs. subjacent)

usage: placed on or over something else; "an overlying image"

2. layered, superimposed, stratified (vs. unstratified), bedded

usage: with one layer on top of another; "superimposed rocks"

See also: superimposed (Dictionary)