from The American Heritage® Dictionary of the English Language, 4th Edition
- transitive v. To set or place (one thing) over or above something else.
- transitive v. Mathematics To place (one geometric figure) over another so that all like parts coincide.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- v. To place one thing on top of another
- v. To place one geometric figure on top of another in such a way that all common parts coincide
from the GNU version of the Collaborative International Dictionary of English
- transitive v. To lay upon, as one kind of rock on another.
- transitive v. To lay (a figure) upon another in such a manner that all the parts of the one coincide with the parts of the other.
from The Century Dictionary and Cyclopedia
- To lay or place upon or over, as one kind of rock on another.
- In botany, to place vertically over some other part: specifically used of arranging one whorl of organs opposite or over another instead of alternately.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- v. place on top of
- v. place (one geometric figure) upon another so that their perimeters coincide
Probably French superposer, back-formation from superposition, superposition, from Late Latin superpositiō, superpositiōn-, from Latin superpositus, past participle of superpōnere, to place over : super-, super- + pōnere, to place; see position.(American Heritage® Dictionary of the English Language, Fourth Edition)