From WordNet (r) 2.0 (August 2003) [wn]:
flatness
n 1: the property of having two dimensions [syn:
two-dimensionality, planeness]
2: the property of having little or no contrast; lacking
highlights or gloss [syn: lusterlessness,
lustrelessness, mat, matt, matte]
From The Collaborative International Dictionary of English v.0.48 [gcide]:
flatness \flat"ness\, n.
1. The quality or state of being flat.
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2. Eveness of surface; want of relief or prominence; the
state of being plane or level.
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3. Want of vivacity or spirit; prostration; dejection;
depression.
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4. Want of variety or flavor; dullness; insipidity.
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5. Depression of tone; the state of being below the true
pitch; -- opposed to sharpness or acuteness.
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