Definition of photoautotrophy in US English:

photoautotrophy

noun

Biology
  • Photoautotrophic nutrition; the condition of being a photoautotroph.

Origin

1960s; earliest use found in Science. From photo- + autotrophy, after German Photoautotrophie.

Pronunciation

photoautotrophy

/ˌfəʊtəʊɔːˈtɒtrəfi/