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F, f | the 6th letter of the Roman alphabet | |
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F, degree Fahrenheit | a degree on the Fahrenheit scale of temperature | |
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F, farad | the capacitance of a capacitor that has an equal and opposite charge of 1 coulomb on each plate and a voltage difference of 1 volt between the plates | |
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fluorine, F, atomic number 9 | a nonmetallic univalent element belonging to the halogens; usually a yellow irritating toxic flammable gas; a powerful oxidizing agent; recovered from fluorite or cryolite or fluorapatite |