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I am looking for a word that expresses same size characteristic. To be specific, we can say that "both DVD's are identical". However, identical might imply all characteristics resemblance. I am looking for a word that emphasizes the size resemblance only. Is there such a word?

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There are words like congruent, isomorphic and isometric that means similar to what you want but they do not fit in the context.

Congruent is used in geometry and isomorphic is used in biology mainly.

In my opinion, your best bet is saying "equal in size".

Also there is one word that means exactly equal in size: equisized

from The Century Dictionary and Cyclopedia Of the same size.

Though, this word is not well-established and when I search it, I see that it is mainly used in technical articles.

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    Why not same-sized? – bib Feb 17 '14 at 13:25
  • @bib Interestingly, I couldn't find any dictionary entry for "same-sized". Though it is used both with hyphen and without hyphen. But I think, "equal in size" is a more common usage. – ermanen Feb 17 '14 at 16:29
  • Yes, but a hyphenated neologism is not likely to get you in too much trouble. Some are obviously doing it. – bib Feb 17 '14 at 18:55
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The first word that comes to mind is "congruent."

For DVDs and wheel-shaped things in general you might get away with the word equirotal but that's a bit more metaphorical than adjectives should be.

"Proportional" can be equal in size ("proportionally cubed cheese" for example) but does not always imply that.

Times, intervals and distances can be 'regular' even though their content varies, so long as they are equal in size or length.

The noun 'doublet' can imply things that are very similar but not identical "a doublet of disks."

The word "symmetrical" flirts with this meaning. A symmetry exists between the two DVDs, the houses are symmetrical, but even that still may convey other characteristic resemblance.

  • I like 'congruent' because anyone who made it through high school geometry should know it means "same size and shape". When you're speaking to those who didn't make it through high school geometry (or can't remember if they did) you'd probably want to fall back on "same size and shape". – Marc Feb 17 '14 at 3:03
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What about equidimensional?

Equidimensional is an adjective applied to objects that have nearly the same size or spread in multiple directions. As a mathematical concept, it may be applied to objects that extend across any number of dimensions. More specifically, it's also used to characterize the shape of three-dimensional solids

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"Commensurate" can mean having an corresponding suitability (size, weight, gravity (ie graveness or seriouesness)). Such as: an answer commensurate with the difficulty of the question.

Dictionary says "commensurate" is: corresponding in size or degree; in proportion.

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