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.
Comment:
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.
Synonyms:
exact_synonym:
cell growth along one axis; cell growth in one dimension; cell morphogenesis by unidimensional growth; polar cell growth; polarized cell growth