Relating to or belonging to birds, or describing something connected with birds.
From Latin 'avis' meaning bird. The -an suffix creates an adjective meaning 'pertaining to.' Scientific and medical fields use Latin-derived words heavily.
Birds are actually living dinosaurs—modern genetic research confirms they descended directly from theropod dinosaurs, making 'avian' features like feathers and hollow bones evolutionary holdovers!
Complete word intelligence in one call. Free tier — 50 lookups/day.