| FoR | |
| abbr. UN gen. | fields of regards |
| for | |
| abbr. | force; forensic; free of tax |
| for. | |
| abbr. dril. | free on rail |
| abbr. earth.sc. | foreign; forest; formation; formula |
| OF | |
| abbr. oil | ocean freight; oceanographic facility; oil-fired; open fracture; open-file report |
| abbr. textile | olefin fiber; ooze finish; open fabric; open flame; Oxidationsfarbstoff |
| AND | |
| abbr. auto. | and circuit |
| abbr. avia. | army/navy drawing |
| abbr. IT | Logical AND; any day now |
| abbr. med. | Allow Natural Death |
| abbr. mil. | alphanumeric display |
| abbr. oil | Advanced Digital Network; alphanumerical display; Andorra |
| exploration | |
| abbr. biol. | explr |