Definition of photoassimilation in US English:

photoassimilation

noun

Biology
  • The assimilation of carbon into living organisms by photosynthesis.

Origin

1920s; earliest use found in Journal of the Society of Dyers and Colourists. From photo- + assimilation.

Pronunciation

photoassimilation

/ˌfəʊtəʊəˌsɪmɪˈleɪʃn/