IPA: /ˈhɛtəˌtrɒf/
KK: /ˈhɛtərəˌtroʊf/
An organism that relies on consuming other organisms or organic matter for its nutrition, rather than producing its own food.
Humans are heterotrophs because they need to eat plants and animals to survive.
Heterotroph → It is formed from "hetero-" (from Greek "heteros", meaning different) and "trophē" (from Greek "trophē", meaning nourishment or food). The word "heterotroph" refers to organisms that obtain their nourishment from different sources, specifically by consuming other organisms.
Think of 'different' ('hetero-') sources of 'nourishment' ('trophē') to remember that a heterotroph is an organism that gets its food from various other living things.
No commonly confused words.