1. the theory that chance is involved in evolution and that variation within a species is accidental. 2. the belief that chance rather than mere determinism operates in the cosmos. Cf. uniformitarianism. 1. Philosophy. a doctrine that the universe is governed only by rigid, unexceptionable law.
Share this set. an organism that produces its own nutrients from inorganic substances or from the environment instead of consuming other organisms. Autotroph. an organism that produces its own nutrients from inorganic substances or from the environment instead of consuming other organisms.
autotroph definition: nounAn organism capable of synthesizing its own food from inorganic substances, using light or chemical energy. Green plants, algae, and certain bacteria are autotrophs.Related Forms: 1. auâ²toÂ·trophâ²ic adjective 2...