from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A temporary, usually wooden framework on which an arch, vault, or dome is supported during construction.

from The Century Dictionary.

  • noun The act of focusing; specifically, the operation of bringing the centers of a set of lenses into line.
  • noun The framing of timber by which an arch, as of a bridge or any vaulted work, is supported during its erection.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Arch.) Same as center, n., 6.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • verb Present participle of center.
  • noun Temporary wooden structure built to support an arch during construction

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun the concentration of attention or energy on something
  • noun (American football) putting the ball in play by passing it (between the legs) to a back


Sorry, no etymologies found.



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  • The relative position of the design of a stamp in relation to its margins. Assuming that a stamp is undamaged, centering is generally an important factor in determining condition and value.

    August 25, 2008