Definition of "heterotroph"

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 March, Harold J. Morowitz, “The Smallest Cell”, in American Scientist‎, volume 101, number 2, archived from the original on 4 January 2017, page 83