- fuseA wick or cord used to convey flame to gunpowder, a bomb, or similar explosive.
- fuselageThe main body of an aerospace vehicle; the long central structure of an aircraft to which the wings (or rotors), tail, and engines are attached, and which accommodates crew and cargo.
- fusariumAny of various fungi, of the genus Fusarium, some of which are pathogenic to plants and animals.
- fusiformShaped like a spindle with yarn spun on it; having round or roundish cross-section and tapering at each end.
- fuseeSynonym of fusil, a light musket or firelock.
- fusilA bearing of a rhomboidal figure, originally representing a spindle in shape, longer than a heraldic lozenge.
- fusidicOf or pertaining to fusidic acid or its derivatives.
- fusoidSynonym of fusiform.