or f stop
[ ef-stop ]
/ ˈɛfˌstɒp /
the setting of an adjustable lens aperture, as indicated by an f number.
What’s The Origin Of The F-word?It's one of the most versatile words in the English language, but where did the F-word really come from? Originally, the naughtiest of naughty words was actually quite an acceptable word, though no English speaker would say that today.
Women: Stop Saying These WordsWhen we asked this woman what words she thought women should stop saying, she responded in rhyme. Watch to hear more about her views on these two phrases that convey unintentional gender bias.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
any of the settings for the f-number of a camera
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012