NEW YORK -- A different kind of F-word is stirring a linguistic and political debate as controversial as what it defines.
The word is "fracking" -- as in hydraulic fracturing, a technique long used by the oil and gas industry to free oil and gas from rock.
It's not in the dictionary, the industry hates it, and President Obama didn't use it in his State of the Union speech -- even as he praised federal subsidies for it.
The word sounds nasty, and environmental advocates have been able to use it to generate opposition -- and revulsion -- to what they say is a nasty process that threatens water supplies.
"It obviously calls to mind other less socially polite terms, and folks have been able to take advantage of that," said Kate Sinding, a senior attorney at the Natural Resources Defense Council who works on drilling issues.
One of the chants at an anti-drilling rally in Albany earlier this month was "No fracking way!"
Industry executives argue that the word is deliberately misspelled by environmental activists and that it has become a slur that should not be used by media outlets that strive for objectivity.
"It's a co-opted word and a co-opted spelling used to make it look as offensive as people can try to make it look," said Michael Kehs, vice president for Strategic Affairs at Chesapeake Energy, the nation's second-largest natural gas producer.
To the surviving humans of the sci-fi TV series "Battlestar Galactica," it has nothing to do with oil and gas. It is used as a substitute for the very down-to-Earth curse word.
Michael Weiss, a professor of linguistics at Cornell University, says the word originated as simple industry jargon, but has taken on a negative meaning over time -- much like the word "silly" once meant "holy."
But "frack" also happens to sound like "smack" and "whack," with more violent connotations.
"When you hear the word 'fracking,' what lights up your brain is the profanity," says Deborah Mitchell, who teaches marketing at the University of Wisconsin's School of Business. "Negative things come to mind."
Obama did not use the word in his State of the Union address Tuesday night, when he said his administration will help ensure natural gas will be developed safely, suggesting it would support 600,000 jobs by the end of the decade.
In hydraulic fracturing, millions of gallons of water, sand and chemicals are pumped into wells to break up underground rock formations and create escape routes for the oil and gas. In recent years, the industry has learned to combine the practice with the ability to drill horizontally into beds of shale, layers of fine-grained rock that in some cases have trapped ancient organic matter that has cooked into oil and gas.