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ef-

American  
  1. variant of ex- (by assimilation) before f: efficient.


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

It was classified as an EF-0 on the Enhanced Fujita scale, the weakest kind of tornado, in which three-second gusts can be between 65 mph to 85 mph.

From Los Angeles Times

That tornado was classified as an EF-1 on the Enhanced Fujita Scale.

From Los Angeles Times

The previous time a tornado with a strength of EF-1 or greater hit L.A.

From Los Angeles Times

County was back in 1983, when an even-stronger EF-2 tornado tore through a residential area of South Central Los Angeles.

From Los Angeles Times

Technically, it has shown standout relative strength against medical equipment peers, as the ratio chart versus the iShares medical device EF has trended higher all year.

From Barron's