ultravirus

== English == === Etymology === From ultra- +‎ virus. === Noun === ultravirus (plural ultraviruses) A filterable virus. == Italian == === Etymology === From ultra- +‎ virus. === Noun === ultravirus m (invariable) ultravirus Synonym: infravirus == Romanian == === Etymology === Borrowed from French ultravirus. Equivalent to ultra- +‎ virus. === Noun === ultravirus n (plural ultravirusuri) ultravirus ==== Declension ====