(intransitive) To flow back again.The sea flows and reflows.
(transitive, chiefly engineering) To cause to flow again, to remelt.Reflowing solder is a common form of rework in the manufacture of printed circuit boards: you heat up the solder and it flows where it should have flowed the first time.
(transitive, computing, wordprocessing) To modify the layout of text around other objects in a document.
2008, Trish Meyer, Chris Meyer, Creating motion graphics with After EffectsThe latter option will reflow text to even out the spacing within each paragraph.