- the dimension of depth in something as distinguished from the two dimensions of any of its flat surfaces
- the quality of having, or of seeming to have, such depth, or solidity
- the quality of being true to life or of seeming real or realistic
See third dimension in American Heritage Dictionary 4
- The quality of depth or thickness in an object or a space.
- The quality of seeming real or lifelike.
- thirdˌ-di·menˈsion·al (thûrdˌdĭ-mĕnˈshə-nəl) adjective
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