In biology, relating to a parasitic organism, especially a fungus or rust, that completes its entire life cycle on a single host plant species.
From auto- (self) + Greek oikos 'house, home.' The term was coined by botanists and mycologists in the 19th century to classify parasites by their host requirements.
Some rust fungi literally live their entire lives on just one plant—they never leave home. The word reveals how closely botanists pay attention: they noticed this 'self-housed' lifestyle and needed a word for it.
Complete word intelligence in one call. Free tier — 50 lookups/day.