Learn how to say Flatness correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word flat:
adjective (flatter, flattest)
1having a level surface; without raised areas or indentations:
he sat down on a flat rock
trim the surface of the cake to make it completely flat
(of land) without hills:
thirty-five acres of flat countryside
(of an expanse of water) calm and without waves.
the flat roof of a garage
having a broad level surface but little height or depth; shallow:
a flat rectangular box
a flat cap
(of shoes) without heels or with very low heels.
2lacking emotion; dull and lifeless:
‘I’m sorry,’ he said, in a flat voice
(of a person) without energy or enthusiasm:
his sense of intoxication wore off until he felt flat and weary
(of trade, prices, etc.) not showing much activity; sluggish:
the UK housing market was flat
(of a colour) uniform:
a flat shade of grey
(of a photograph or negative) lacking contrast.
3(of a sparkling drink) having lost its effervescence:
she sipped some of the flat champagne
(of something kept inflated, especially a tyre) having lost some or all of its air, typically because of a puncture.
British (of a battery) having exhausted its charge.
4 [attributive] (of a fee, wage, or price) the same in all cases, not varying with changed conditions or in particular cases:
a flat fare of £2.50
See also flat rate.
(of a denial, contradiction, or refusal) completely definite and firm; absolute:
the request was met with a flat refusal
5(of musical sound) below true or normal pitch.
[postpositive] (of a key) having a flat or flats in the signature.
[postpositive] (of a note) a semitone lower than a specified note:
6 (Flat) relating to flat racing:
the Flat season
1in or to a horizontal position:
he was lying flat on his back
she had been knocked flat by the blast
lying in close juxtaposition, especially against another surface:
his black curly hair was blown flat across his skull
so as to become smooth and even:
I hammered the metal flat
2 informal completely; absolutely:
I thought you’d turn me down flat
Myers was flat broke
used with an expression of time to emphasize how quickly something can be done or has been done:
you can prepare a healthy meal in ten minutes flat
3below the true or normal pitch of musical sound:
it wasn’t a question of singing flat, but of simply singing the wrong notes