Definitions for "Flatten"
To throw down; to bring to the ground; to prostrate; hence, to depress; to deject; to dispirit.
To make vapid or insipid; to render stale.
To lower the pitch of; to cause to sound less sharp; to let fall from the pitch.
make flat or flatter; "flatten a road"; "flatten your stomach with these exercises"
become flat or flatter; "The landscape flattened"
To combine together multiple layers and other elements of a digitally manipulated or composite image into one. Usually final step of working with layers prior to saving images in standard image format. Otherwise, save must be in native format.
To convert an object from its original format to a stream format See also: unflatten, stream format
To permanently combine selected objects in a PhotoDraw picture into a picture made of a single object. After saving a picture in a flat format, you can no longer edit its individual objects.
flatten a sequence of images
To remove structural information, esp. to filter something with an implicit hierarchical structure into a simple sequence; also tends to imply mapping to flat-ASCII.
To reduce to an even surface or one approaching evenness; to make flat; to level; to make plane.
To return a paper artwork to plane using pressure, moisture and/or heat.