heterotroph

Etymology

From hetero- (“other”) + -troph (“nutrition”).

noun

1. (ecology) An organism which requires an external supply of energy in the form of food as it cannot synthesize its own.
   Woody detritus is an important component of forested ecosystems. It can reduce erosion and affects soil development, stores nutrients and water, provides a major source of energy and nutrients, and serves as a seedbed for plants and as a major habitat for decomposers and hetereotrophs. 2009, Christian Wirth, Gerd Gleixner, Martin Heimann, Old-Growth Forests: Function, Fate and Value, Springer Science & Business Media, page 159
   It is likely that the long evolutionary trajectory of Mycoplasma went from a reductive autotroph to oxidative heterotroph to a cell-wall–defective degenerate parasite. This evolutionary trajectory assumes the simplicity to complexity route of biogenesis, a point of view that is not universally accepted. 2013-03, Harold J. Morowitz, “The Smallest Cell”, in American Scientist, volume 101, number 2, archived from the original on 2017-01-04, page 83