- F.⇄F.
an abbreviation for the following:
1. Fahrenheit.
2. February.
3. Fellow (of), as in F.R.S. = Fellow of the Royal Society.
Ex. Sir Isaac Newton, F.R.S.
4. fluid (ounce).
5. folio.
6. France.
- f.⇄f.
an abbreviation for the following:
1. fathom.
2. female.
3. feminine.
4. (of lead pencils or pens) fine.
5. florin.
6. fluid (ounce).
7. folio.
8. following.
9. franc or francs.