cell morphogenesis unidimensional cell growth cell elongation cell growth along one axis cell morphogenesis by unidimensional growth polar cell growth The process in which a cell irreversibly increases in size in one [spatial] dimension or along one axis, resulting in the morphogenesis of the cell. polarized cell growth cell growth in one dimension biological_process GO:0009826 Unidimensional cell growth refers to a change in both cell size and cell shape. For cell shape changes where cell size is not affected, consider instead the term 'regulation of cell shape ; GO:0008360' and its children. cell growth developmental growth involved in morphogenesis