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[verb oh-ver-ley; noun oh-ver-ley] /verb ˌoʊ vərˈleɪ; noun ˈoʊ vərˌleɪ/
verb (used with object), overlaid, overlaying.
to lay or place (one thing) over or upon another.
to cover, overspread, or surmount with something.
to finish with a layer or applied decoration of something:
wood richly overlaid with gold.
Printing. to put an overlay upon.
something laid over something else; covering.
a layer or decoration of something applied:
an overlay of gold.
  1. a shaped piece of paper, or a sheet of paper reinforced at the proper places by shaped pieces, put on the tympan of a press to increase or equalize the impression.
  2. a method of preparing copy for multicolor printing, in which matter for each color is prepared on a transparent sheet that is placed over a key plate, usually the one to be printed in black.
  3. the sheet or sheets so prepared.
a sheet of transparent paper placed over a photograph, a dummy, or other artwork for noting corrections, instructions, mechanical separations, etc.
Computers. software or data in external storage and brought into main storage for execution by replacing or augmenting software or data already there.
a transparent sheet giving special military information not ordinarily shown on maps, used by being placed over the map on which it is based.
a decorative piece of leather or other material stitched on a shoe.
Scot. a cravat.
Origin of overlay1
Middle English word dating back to 1250-1300; See origin at over-, lay1


[oh-ver-ley] /ˌoʊ vərˈleɪ/
simple past tense of overlie. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for overlaying
Contemporary Examples
Historical Examples
  • The overlaying of silver by antimony is their particular craft.

    In Mesopotamia Martin Swayne
  • Veneering may therefore be comprehensively described as overlaying or inlaying one body with portions of another.

    Chats on Old Clocks Arthur Hayden
  • It would be explained by the Phnician overlaying of wood-work with beaten bronze, or, to speak more correctly, with copper.

    History of Ancient Art Franz von Reber
  • Dipoinos and Skyllis still only in part covered the carved core of wood, and restricted this overlaying to ivory.

    History of Ancient Art Franz von Reber
  • It is composed of a black vegetable mould of a foot to two feet in depth, overlaying a hard yellow clay.

  • Xenophon, in his "Cyropaedia," has also depicted an imaginary political society by overlaying with fiction historical traditions.

  • Flat blocks, which require careful "overlaying" on the machine, waste too much time for daily news work.

    Twentieth Century Inventions George Sutherland
  • It would revive their long-deferred and dying hopes, overlaying the near future with its gold.

  • It is a very physical business, squeezing out or overlaying the spiritual in men, though powerless wholly to extinguish it.

    Thoughts on religion at the front Neville Stuart Talbot
British Dictionary definitions for overlaying


verb (transitive) (ˌəʊvəˈleɪ) -lays, -laying, -laid
to lay or place something over or upon (something else)
(often foll by with) to cover, overspread, or conceal (with)
(foll by with) to cover (a surface) with an applied decoration: ebony overlaid with silver
to achieve the correct printing pressure all over (a forme or plate) by adding to the appropriate areas of the packing
noun (ˈəʊvəˌleɪ)
something that is laid over something else; covering
an applied decoration or layer, as of gold leaf
a transparent sheet giving extra details to a map or diagram over which it is designed to be placed
(printing) material, such as paper, used to overlay a forme or plate
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for overlaying



"to cover the surface of (something)," c.1300, in part from Old English oferlecgan "to place over," also "to overburden," and in part from over- + lay (v.). There also was an overlie in Middle English, but it merged into this word. Similar compounds are found in other Germanic languages, e.g. Gothic ufarlagjan. Related: Overlaid; overlaying.



in the printing sense, 1824, from overlay (v.). Meaning "transparent sheet over a map, chart, etc." is from 1938. In earliest noun use it meant "a necktie" (1725).

Online Etymology Dictionary, © 2010 Douglas Harper
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