Definition of reflow
1(in word processing) the action of rearranging text on a page after having changed such features as type size, line length, and spacing. 2 Electronics a soldering technique in which surface-mount components are held in position on a circuit board using a paste containing solder that melts to form soldered joints when the circuit board is heated.
verb [with object]
1(in word processing) rearrange (text) on a page, having changed such features as type size, line length, and spacing. 2 Electronics attach (a surface-mount component) using the reflow technique.