Definition of autotroph in English:



  • An organism that is able to form nutritional organic substances from simple inorganic substances such as carbon dioxide.

    Compare with heterotroph

    ‘Because they interact with light to absorb only certain wavelengths, pigments are useful to plants and other autotrophs - organisms which make their own food using photosynthesis.’
    • ‘These developmental differences between autotrophs and parasites suggest that the functions of photoreceptors differ among autotrophs, hemiparasites, and holoparasites.’
    • ‘It is a true autotroph and uses only two sources for its metabolism: carbon dioxide as its source for carbon and hydrogen as an energy source.’
    • ‘Plants are autotrophs, self-nourishing life forms.’
    • ‘Since plants and other photosynthetic organisms can produce many of their own nutrition requirements they are known as autotrophs.’
    • ‘The kelps are an important group of marine autotrophs that has left little or nothing in the way of a direct fossil record.’



/ˈôdəˌtrōf/ /ˈɔdəˌtroʊf/