Look up ef in Wiktionary, the free dictionary. EF or ef may refer to: Ef (band), a post-rock band from Sweden Ef: A Fairy Tale of the Two., a Japanese...

The Enhanced Fujita scale (abbreviated as EF-Scale) rates tornado intensity based on the severity of the damage they cause. It is used in some countries...

The EF English Proficiency Index (EF EPI) attempts to rank countries by the equity of English language skills amongst those adults who took the EF test...

EF Hutton was an American stock brokerage firm founded in 1904 by Edward Francis Hutton and his brother, Franklyn Laws Hutton. Later, it was led by well...

The EF lens mount is the standard lens mount on the Canon EOS family of SLR film and digital cameras. EF stands for "Electro-Focus": automatic focusing...

The General Dynamics–Grumman EF-111A Raven is a retired electronic-warfare aircraft designed to replace the EB-66 Destroyer in the United States Air Force...

EF Education First (abbreviated as EF) is an international education company that specialises in language training, educational travels, academic degree...

other modern western European languages. Its name in English is ef (pronounced /ˈɛf/), and the plural is efs. The origin of 'F' is the Semitic letter...

Ef: A Fairy Tale of the Two is a Japanese two-part adult visual novel series by Minori for Windows PCs and PlayStation 2. The first game in the series...

EF Eridani (abbreviated EF Eri, sometimes incorrectly referred to as EF Eridanus) is a variable star of the type known as polars, AM Herculis stars, or...