flatness

From Middle English flatnesse, equivalent to flat +‎ -ness.

• (US) IPA^(key): /ˈflætnəs/
• Rhymes: -ætnəs

flatness (countable and uncountable, plural flatnesses)

1. The state of being flat
   • 2022 November 30, Paul Bigland, “Destination Oban: a Sunday in Scotland”, in RAIL, number 971, page 75:

     The flatness of the landscape facilitates views right across the Firth of Forth to Fife, before the railway begins to pierce the Edinburgh suburbs.

2. The state of being two-dimensional; planar : planarity
3. The state of being bland : dullness
4. Mattness, the quality of a painted surface which scatters or absorbs the light falling on it, so as to be substantially free from gloss or sheen
5. (oenology) Lack of bouquet and freshness of a wine, through too much aeration or infection with film yeasts
6. (statistics) slim-tailedness or platykurticity

• noetic flatness