-ia

I. noun suffix Etymology: New Latin, from Latin `; Greek, suffix forming feminine nouns 1. pathological condition
Example: hysteria 2. genus of plants or animals
Example: Fuchsia 3. territory ; world ; society
Example: suburbia II. noun plural suffix Etymology: New Latin, from Latin (neuter plural of -ius, adjective ending) `; Greek, neuter plural of -ios, adjective ending 1. higher taxon (as class or order) consisting of (such plants or animals)
Example: Sauria 2. things derived from or relating to (something specified)
Example: militaria III. plural of -ium

Merriam-Webster's Collegiate Dictionary