D defs.my
Entry 2 senses Webster, 1913

Superpose

/so͞oʹ-pər-pōz'/ · Su·per·pose · IPA /ˈsuː.pɚˌpoʊ̯z/
01 v. t. To lay upon, as one kind of rock on another.
imp. & p. p. Superposed; p. pr. & vb. n. Superposing
  1. 1.
    To lay upon, as one kind of rock on another.
  2. 2.
    To lay (a figure) upon another in such a manner that all the parts of the one coincide with the parts of the other; as, to superpose one plane figure on another.(Geom.)