upfold verb 3noun 1forms 3 verb3 •To fold up.I lie on my side, head sunk in the pillow, legs upfolded, as if for Indian burial. — 2003 •To create a raised fold.A groove in the cortex is called a fissure or a sulcus, and the upfolded tissue between two sulci is a gyrus. — 2012 •(rare) To come together in order to form a wholeIt was the merciless upfolding of that glorious transfiguration pageant, in which the corruptible was seen putting on incorruption, and the mortal clothing itself with immortality. — 1869 noun1 •An anticline.In young mountains, upfolds (anticlines) form ridges and downfolds (synclines) form valleys. — 2006 formsupfolded · upfolding · upfolds
