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
    • ‘These developmental differences between autotrophs and parasites suggest that the functions of photoreceptors differ among autotrophs, hemiparasites, and holoparasites.’
    • ‘The kelps are an important group of marine autotrophs that has left little or nothing in the way of a direct fossil record.’
    • ‘Plants are autotrophs, self-nourishing life forms.’
    • ‘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.’
    • ‘Since plants and other photosynthetic organisms can produce many of their own nutrition requirements they are known as autotrophs.’
    • ‘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.’