Any process in which external signals modulate the frequency, rate or extent of cell growth, the irreversible increase in size of a cell over time.
Synonyms:
exact_synonym:
interpretation of external signals that regulate cell growth; regulation of cell growth by detection of exogenous stimulus; regulation of cell growth by sensing of exogenous stimulus; regulation of growth by exogenous signal; regulation of growth by exogenous stimuli; regulation of growth by exogenous stimulus; regulation of growth by external signal; regulation of growth by external stimuli; regulation of growth by external stimulus