with the flat side, rather than the edge, foremost or in contact.

Also flat·ways [flat-weyz] /ˈflætˌweɪz/.

Origin of flatwise

First recorded in 1595–1605; flat1 + -wise
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for flatwise

Historical Examples of flatwise

  • Placing it flatwise on supports close to its ends we find that its own weight causes a decided sag.