In dictionaries:
ef 2
ef hand motifs
Calcium-binding helix-loop-helix structures.
ef 1
ef 4
ef tu
EF hand
a helix–loop–helix structural domain or motif found in a large family of calcium-binding proteins.
EF English Proficiency Index
The EF English Proficiency Index attempts to rank countries by the equity of English language skills amongst those adults who took the EF test.
Canon EF lens mount
The EF lens mount is the standard lens mount on the Canon EOS family of SLR film and digital cameras.
EF Education First
(abbreviated as EF) an international education company that specialises in language training, educational travels, academic degree programmes, and cultural exchanges.
EF Standard English Test
a standardized test of the English language designed for non-native English speakers.
EF Hutton
an American stock brokerage firm founded in 1904 by Edward Francis Hutton and his brother, Franklyn Laws Hutton.
Canon Extender EF
The Canon Extender EF lenses are a group of teleconverter lenses made by Canon.
Canon EF 24-105mm lens
The EF 24–105mm f/4L IS USM is an EF mount wide-to-telephoto zoom lens.
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