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...

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...

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

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 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...

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 or Fe (Ф ф; italics: Ф ф) is a Cyrillic letter, commonly representing the voiceless labiodental fricative /f/, like the pronunciation of ⟨f⟩ in "fill...

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...

EF-Tu (elongation factor thermo unstable) is a prokaryotic elongation factor responsible for catalyzing the binding of an aminoacyl-tRNA (aa-tRNA) to the...

The Canon EF-S lens mount is a derivative of the EF lens mount created for some Canon digital single-lens reflex cameras with APS-C sized image sensors...

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...

team's main sponsors are EF Education First, Oatly and Cannondale. In June 2023 EF Education announced a new women's team, EF Education–Cannondale. This...

The Junkers EF 61 was a German prototype twin-engined high-altitude bomber aircraft of the 1930s. Only two examples were built, but it provided valuable...

mitochondria as TSFM. It is similar to eukaryotic EF-1B. EF-Ts serves as the guanine nucleotide exchange factor for EF-Tu (elongation factor thermo unstable), catalyzing...

Junkers EF 062, early EF 128 design study Junkers EF 063, early EF 128 design study Junkers EF 065, possible early EF 082 design study, 1939. Junkers EF 066...

The Canon EF-M lens mount, introduced in 2012, is a derivative of the Canon EF lens mount designed for use with the Canon EOS M mirrorless interchangeable-lens...

EF 131 which was flown on 23 May 1947, but by that time, jet development had already overtaken the Ju 287. A final much-enlarged derivative, the EF 140...

Tanzania (EF) Lhotse, Nepal (EF) Makalu, Nepal/China (EF) Mount Ararat, Turkey (EF) Mount Everest, China/Nepal (EF) Mount Logan, Canada (EF) Mount Rainier...

The EF 132 was a planned jet bomber, under development for the Luftwaffe during World War II. It was the last aircraft project development undertaken by...

Air and Space Force (Ejército del Aire y del Espacio) ordered 60 EF-18A model and 12 EF-18B model Hornets (the "E" standing for "España", Spain), named...

The Ford Falcon (EF) was a full-size car that was produced by Ford Australia from 1994 to 1996. It was the fourth significantly updated iteration of the...

Milwaukee, St. Paul and Pacific Railroad (Milwaukee Road) classes EP-1 and EF-1 comprised 42 boxcab electric locomotives built by the American Locomotive...

R.ef was a boyband trio in South Korea. Their main genres were K-pop and hip-hop. In 1995, 21-year-old singer Lee Sung Wook (이성욱), 25-year-old rapper Park...

EF is a manual focus 35mm single-lens reflex camera produced by Canon between 1973 and 1978. It was compatible with Canon's FD-mount lenses. The EF was...

The Junkers EF 126 was an experimental fighter proposed by the German Miniaturjägerprogramm of 1944–1945, for a cheap and simple fighter powered by a pulsejet...

OKB-1 EF 131 with Soviet turbojet engines. The initial version, a tactical jet bomber with a secondary reconnaissance role, was initiated as the EF-140...

2C-EF is a lesser-known psychedelic drug. It was originally named by Alexander Shulgin as described in his book PiHKAL (Phenethylamines i Have Known And...

Canon EF-S 18–55mm lens f/3.5–5.6 is a Canon-produced wide-angle to mid telephoto zoom lens for digital single-lens reflex cameras with an EF-S lens...