ef-

American  

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

---

Example Sentences

Jonathan Vaughters, the man behind EF Pro Cycling, the U.S.-born team that competes in the Tour, told me he’d definitely “think about” Stolz as an outside prospect.

From The Wall Street Journal

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