vertical-plank door
battened door
- formal dress
- formal education
- formal end to reconstruction
- formal engineering approaches to software components and architectures
- formal engineering change proposal
- formal equivalence
- formal exclusion
- formal expression
- formal financial institution
- formal foundations of software evolution
- formal functional programming
- formal fuzzy logic
- formal garden
- formal government testing
- formal grammar
- formal grammar/mathematics of language
- formal grammars
- formal hardware testing
- formalin
- formaline
- formalin-ether sedimentation concentration
- formalin ether sedimentation of feces
- formalin-ethyl acetate sedimentation concentration
- formalin-fixed bordetella pertussis
- formalin-fixed paraffin-embedded tissue