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symbol for the element californiumcalifornium
[from California], artificially produced, radioactive metallic chemical element; symbol Cf; at. no. 98; mass no. of most stable isotope 251; m.p. about 900°C;; b.p. about 1,470°C;; density unknown; valence +3.
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1. Abbr. for “cost and freight.”
2. Abbr. for “cooling fan.”


The country code for the Central African Republic.
References in periodicals archive ?
After Christmas, Stephen learned that there were still more kids on the street.
Against Nottingham Forest just after Christmas, Stephen and Andy Reid were the two best players on the park.
Every week before Christmas, Stephen will choose a selection of the best before we announce the overall winner who will receive pounds 250 to spend on next year's decorations, courtesy of Rapid.