Describing a parasite that requires two different host species to complete its life cycle, switching hosts at different developmental stages.
From Greek 'hetero-' (different) and 'xenos' (host/stranger), a parasitology term from the 1900s.
Some parasites have evolved incredible host-switching strategies: a roundworm might develop in one host, then jump to a completely different species to reproduce—it's like a microscopic spy thriller!
Complete word intelligence in one call. Free tier — 50 lookups/day.