Flat Definition

Origin of Flat

• From 1795, alteration of Scots flet (“inner part of a house”), from Middle English flet (“dwelling”), from Old English flet, flett (“ground floor, dwelling”), from Proto-Germanic *flatją (“floor”), from Proto-Germanic *flataz (“flat”), from Proto-Indo-European *plat- (“flat”). Akin to Old Frisian flet, flette (“dwelling, house”). More at flet, flat₁.

  From Wiktionary

• From Middle English flat, from Old Norse flatr (Norwegian and Swedish flat, Danish flad), from Proto-Germanic *flataz, from Proto-Indo-European *plat- (“flat”); akin to German Flöz (“a geological layer”), Ancient Greek πλατύς (platus), Latvian plats, Sanskrit प्रत्हस् (prathas, “extension”).

  From Wiktionary

• Alteration of Scots flet inner part of a house from Middle English from Old English floor, dwelling plat- in Indo-European roots

  From American Heritage Dictionary of the English Language, 5th Edition

• Middle English from Old Norse flatr plat- in Indo-European roots

  From American Heritage Dictionary of the English Language, 5th Edition