Definition of photoautotroph in English:

photoautotroph

noun

Biology
  • An autotrophic organism which uses light as an energy source.

Origin

1930s; earliest use found in Quarterly Review of Biology. From photo- + autotroph. Compare German Photoautotrophie.

Pronunciation

photoautotroph

/ˌfəʊtəʊˈɔːtə(ʊ)trəʊf/