IPA: //ˌfoʊtəʊˈɔːtətrɒf//
KK: /ˈfoʊtoʊˌɔtəˌtrɔf/
A type of organism that can make its own food using light energy and inorganic materials. Examples include green plants and certain bacteria that perform photosynthesis.
Green plants are photoautotrophs because they use sunlight to create their own food.
Photoautotroph → It is formed from "photo-" (from Greek "phōs", meaning light), "auto-" (from Greek "autos", meaning self), and "troph" (from Greek "trophē", meaning nourishment or feeding). The word describes an organism that uses light to produce its own food, thus nourishing itself.
Imagine an organism that feeds itself ('auto-') using 'light' ('photo-') for nourishment ('troph'). This helps you remember that a photoautotroph is a self-feeding organism that uses light.
No commonly confused words.